The answer is simple, 2 extra sub places on the bench for under 19 players who have been at the parent club for over 6 months of which 1 player can be chosen. Youth players will then be on the bench for every premier league game, get matchday experience, have something to work for at all times in u23/u18 games. Every team in every league gets the same and hey ho, kids on the bench. 3-0 up at home to Watford and Foden gets 15 mins. Easy.