Because you need depth - are Miley, White, Turner Cook or even Anderson in a position to play regular first team football? Anderson is close and if his 45 min display the other week is anything to go by he maybe ready for that 6th choice position where he gets cups and Europeans football but McTomminay would be a better choice in the big moments.
If any gets a serious injury you are then back down to 4 cm's and then one injury and a suspension and you are looking at regular game time for the youngsters who might or might not be ready...
I'll trust the process and in Eddie
Think he’s not as good as Longstaff. A lot of money got basically 6th choice