Don’t agree with you on that. There’s loads of players now and in the past who are 18 that started and got plenty of opportunity. Foden and Diaz are Good enough now imonto be getting a lot more game time this season
If Foden for instance has to wait 3/4 years more to get regular game time then he will be leaving. Playing an 18 year old doesn’t mean we will automatically lose or play bad if they are good enough
There are not loads of players who currently break through into European elite teams at 18, that's my point.
Of course we will not automatically lose or play less well, these two are potentially two of the world's great players. I am saying that we, and they, should be patient and be happy with gradually increasing time on the pitch.