Looking online, there is no limit on the amount of U21's that can be used and any amount of goalkeepers can be named but if we lose some to injury we cannot add over 21's in their place so would either have to use an U21 or obtain an emergency loan.
What we need are some youngsters who offer...
I'd be interested to see if the 25 man squad has to contain a specified amount of goalkeepers or if there is the opportunity to bring one in if we were hit by an injury crisis. If we had that as an option then just name 2 goalkeepers and bring back Walton from a loan spell if required