Is it being watched that bothers them?
Start at home with games that have no audience at all.
See the shy child gamesHanging back is a sensible first move.
If your child is too shy to join in football at the park, the way in is a few small steps, a few easy words and a parent who stands back.
For a long time I stood at the edge of the grass hissing "go on, just ask them", and my child went stiff, stared at the ball and asked to go home before I'd finished the sentence. We sat in the car with the ball on the back seat and I realised the problem was me, not the park.

Start here
Do not push your child to ask. Climb a short ladder instead: rehearse the walk-up at home, arrive early with your own ball, play near the other children, do a small job such as returning a stray ball, and only then ask or be asked. Stand back, stay in sight and agree an exit before you leave the car.
Some children feel shy in social situations and may need support, and the NHS says not to force a child into a stressful situation without talking about it first (the NHS advice on anxiety in children). Avoiding a feared situation brings short-term relief but can make it harder to face (the NHS step-by-step plan for facing fears). The NHS idea is to break a situation into small steps and start with the easiest (a children's anxiety page from an NHS trust).
Here that idea becomes five football steps. The ladder is my arrangement of that principle for a park, not a tested programme, and shyness is a normal temperament, so none of this is medical advice.
This is for a child who has not asked yet. If your child asked and was turned away, or is never picked at school break, that is a different problem, covered in what to do if your child has asked and been turned away. If the shyness is about being watched, start with football games for a shy child at home.
Do this in order

The order is mine, built on the NHS small-steps principle (NHS, NHS trust) and the watch-then-join advice of the Child Mind Institute and ZERO TO THREE's advice on slow-to-warm-up children. Stay on a rung until your child asks for more, and go back one rung after a wobble.
Rehearse the walk-up at home. Two minutes in the garden: you play another child with a ball, your child walks over and says hello with one of the lines in the next section, then you swap. A paediatrician's advice on shy children recommends practice and role-play before a new situation. Keep it silly and short.
Arrive early with your own ball. Get there before the usual kickabout starts. One parent quoted by the Child Mind Institute says fifteen minutes early lets a child settle without the chaos of other children (Child Mind Institute). That is one parent's tip, not a rule. Have a kick on your own patch.
Play near, not with. Stay a few metres from the game and keep passing to a bench, a tree or the parent. Watching first and playing alongside are the usual bridge to playing together (Child Mind Institute, ZERO TO THREE). Stay here for as many visits as it takes.
Do a small job. When the game's ball rolls over, your child passes it back with "Here you go". That is real contact with no ask in it. Give brief praise afterwards, specific and quiet (CHOP).
Ask or be asked. Ready when your child starts hanging closer on their own. Use a group-friendly line from the next section. One psychologist advises watching the game first and blending in rather than opening with "Can I play?" (one psychologist's watch, then blend advice). No study is named.
Two or three visits per rung is a guess from experience, so let your child set the pace.
Words you can rehearse
Short, ready-made lines take the "what do I say" worry away (CHOP, Child Mind Institute). Practise them at home so they are already in the mouth.
"Shall we get the ball out and have a kick on our own patch first? We can go home whenever you say the word, and watching counts as a good go."
| Rung | What you can say | What your child can say |
|---|---|---|
| Rung 1, rehearse at home | "Shall we pretend I'm another child and you walk over and say hello? Then we'll swap." | "Hi, I'm (name). Want to have a go with my ball?" |
| Rung 2, arrive early | "Shall we get the ball out and have a kick on our own patch first?" | No words needed. If another child arrives, a smile and "Hi" is enough. |
| Rung 3, play near | "Pass it over here. Watching is fine too." | No words needed. If another child looks over, a smile and "Hi" is enough. |
| Rung 4, a small job | Afterwards, quietly: "Nice pass back." | "Here you go." Or "Nearly in!" if the ball goes close to a goal. |
| Rung 5, the ask | Nothing. Stay back and let your child pick the line. | Pick one: "Can I join your team?" or "Are you playing a match?" or "Want to have a go with my ball?" |
The third ask is my own idea. A child with a ball of their own has something to offer, and it lets the other child say yes without a decision about a stranger.
A "no" or a silence says nothing about your child. Say "Shall we try again next time?" and go back one rung.
At home, the rehearsal line for you is: "Shall we pretend I'm another child and you walk over and say hello? Then we'll swap." The Child Mind Institute shows a role-played line of the same kind, "Hi, I'm Tom. What do you like to play?" (Child Mind Institute). The wording here is my own, and no line is magic. None comes from a trial.
Where you stand
The NHS says to try not to become overprotective or anxious yourself (NHS). A child reads your body before your words, so stand back, within sight and earshot, on a bench or by the path, and look relaxed.
Do not narrate. Do not speak for your child with "he's a bit shy". Do not apologise to other parents, and do not walk into strangers' game as an adult.
At a family visit it is different: with relatives you can join the smaller side yourself, as in the cousins' game.
| What you see | What to do | Why |
|---|---|---|
| Your child edges closer on their own | Stay on this rung a little longer, or move up one when they ask | Moving at their pace keeps it their idea. |
| Your child freezes, goes quiet or says "I want to go home" | Go back one rung, or leave. Do not argue | The NHS says do not force a child into a stressful situation (NHS). A parent quoted by the Child Mind Institute stops and reverses the situation at signs of stress (Child Mind Institute). |
| Only watching, for the third visit in a row | Keep going, with a ball and an early arrival, and ask once what would make it easier | Watching counts. The NHS says to talk to the child first about what is making them anxious (NHS). |
| The other children are much bigger or rough | Move to your own patch or leave | A park game is not always a fair match. See the safety note below. |
| Your child asks to go home straight away every time | Keep your promise and go home, then start the next visit one rung down, near the car or entrance | Smaller steps, not a verdict. |
Agree a signal in the car, such as a thumb or "ready when you are". Leave on a good moment, not after a wobble, and name one thing that went well.
"Shall we head home? You stayed ages today, and I liked how you watched the whole game."
Then add "Saturday, same time?" A visit where your child only watched is a visit that worked.
Check which one you have
If your child has not asked yet, the ladder above is the plan. If your child asked and was told no, or stands alone at school break and is never picked, a different plan is needed, and a child who asked and was turned away has a plan of their own.
Shyness is not a problem to fix. CHOP calls it a normal developmental phase many children outgrow, and points to a paediatrician if it impairs school or sport (CHOP).
If the quiet has spread beyond football, see a GP. The NHS criteria are a child who is constantly anxious and it is not getting better or is getting worse, self-help is not working, or it is affecting school, family life or friendships (the NHS guide to when to see a GP). Read more in the NHS advice on anxiety in children. A worried parent can call the YoungMinds Parents Helpline on 0808 802 5544, and should check the hours on their site.
If the park has become somewhere your child says they never want to go again, the guide for a child who wants to quit football is the next stop.
What is known and what is not
The NHS and an NHS trust describe a step-by-step plan, easiest first, and warn that avoiding a feared situation can make it harder to face (NHS, NHS trust). Those pages are about anxiety and fears in general, not shyness, football or a park, and they are not written for 5 to 9 year olds in particular.
Researchers teach parents "stepladders" and less rescuing. Two randomised trial protocols cover very inhibited preschoolers: about 500 children aged four in the Cool Little Kids trial protocol, and about 385 planned in the online version of the trial protocol, a course for parents. An earlier trial quoted in the first paper reported fewer anxiety disorders after a parent programme, 50 percent against 64 percent at age 5.
These are protocols with no results of their own, the earlier figures are secondhand, and the children were chosen for strong inhibition. The outcome was anxiety disorders, so they say nothing about a shy child at a kickabout. I could not check the peer-entry research behind the watch-then-join advice.
That advice comes from a clinician, a children's charity, a clinician-reviewed article built on parents' own tips and one psychologist who names no study. It is expert and parent opinion, not trial evidence. I would rather tell you the ladder is a sensible order than pretend a study proves it.
Quick answers
Do not push. Use the five rungs: rehearse at home, arrive early with your own ball, play near the other children, do a small job such as returning a stray ball, then ask or be asked. The NHS says to start with the easiest step (NHS).
Pick one short line: "Can I join your team?", "Are you playing a match?" or "Want to have a go with my ball?" Rehearse it at home first (CHOP, Child Mind Institute).
It tends to put them on the spot. One psychologist advises watching first and blending in rather than opening with "Can I play?" (psychologist). The NHS says not to force a child into a stressful situation (NHS).
Stay in sight and in earshot, a little way back, and keep your face relaxed. The NHS says to try not to become overprotective or anxious yourself (NHS). Do not walk into strangers' game as an adult.
Shyness is a normal temperament many children outgrow (CHOP). If your child is constantly anxious and it is not getting better, or it is affecting school, family life or friendships, the NHS says see a GP (NHS).
That is a visit that worked. Keep the early arrival and the ball, ask once what would make it easier, and go back a rung if needed (NHS, Child Mind Institute).
Keep going
Three places to go next, depending on what you see. If the tears come at the start of a session, what to do when a child cries at football training walks through staying, then stepping back.
Start at home with games that have no audience at all.
See the shy child gamesWhat a first session looks like and the one game to practise first.
See the first session guideEverything for nervous beginners, in one place.
See Confident BeginnersTonight's five minutes
Play the two-minute swap in the garden tonight: you are the other child, they walk over and say hello. Next time at the park, arrive early and take the ball.