I think we should be ok on this. Brahim has been here for a bit now and he'll feature in the league and FA cups with Foden this year. It seems to me that the current plan is have a couple of young players with Pep for the season and then loan them the year after. Garcia and Maffeo did it last year until Maffeo was sent to Girona. Garcia got a fair few cup games whilst actually starting against Middlesbrough. Diaz and Foden seem to have decent heads on their shoulders and will understand the role they'll play this year. Getting a handful of games at 17 years old under Guardiola, followed by a year on loan in Girona if they aren't quite ready, is about as good as any player could ask for.