messymascot
Player Valuation: £35m
If I'm honest, I'm not fully versed on the rules; from what I do know/have read, from a potential squad of twenty-five* you need eight home-grown players.
Home-grown is a player who has trained in England for three years from 17-21, and I think four of those have to be at the club too.
Apart from that, I don't think there's a set limit from any country or region. However, there'll be others who know much more than myself.
*U21 don't need registering but they can be to help meet the quota of home-grown etc.
Your almost right. The 4 club trained player only applies to European competition. Also its not you have to have 8 home grown players the rule is you can only have 17 non home grown so you don't actually need the 8 home grown but that is the only way you can name a full 25 man squad.