Update for anyone interested.
He's now played the last 3 weekends of the U6 tournament (year above) and all going well, he's been invited to go and train with Burnley and Liverpool so far.
His coach has also said that a certain Manchester club (:-) have shown an interest in him training with them, but not heard anything else on that so we'll see what happens.
The coaches I've spoken to at the tournament have said that he should stay playing at a year up until the time comes where maybe it becomes a struggle and then drop him back to his true age group.
The main thing is he's enjoying it and I get to watch football at the weekend through the summer with a bacon butty and a coffee instead of being dragged around the shops.
Thanks for all the advice and feedback
Cheers
OxBlue