Growth spurts are definitely something that needs a lot of care. I have seen it quite a few times with young footballers. It can be really odd to watch and if you dont know what you are seeing it is mind boggling. I have seen lads grow over a summer break and come back to pre-season and they can barely trap a ball. It can take a couple of weeks for their brains to realise their feet are further away. I know that sounds stupid, but I have seen it time and again. Coordination becomes a problem in a noticeable way. I actually think Rigg may have had a small one middle of last season where I thought his ball control was off a touch.
As to Rigg the player. I have really high hopes for him this season. Such a shame he has this niggle. I think all the talk over the summer of players playing Riggs role, may end being reversed into Rigg playing Riggs role