I do not know some of the younger Turkish players at Galatasaray, but because they are in UCL and one of the bigger leagues that I like to gamble, I check their games, and seems like there is always this new young kid there, and some of them are not like that young neither, not like 18, for example this "baris alper" player is not "that" young, but after hearing about tete, ziyech, ndombele, torreira, icardi and zaha then suddenly seeing these players makes you want to check them.
They had another kid at defense too but I do not know him neither. I think it's quite cool to see them not only try to get the best from their stars, but also give time for their future players too. If Icardi is actually gone to Madrid like reported, they will get richer, but I am not sure if it will be good for them no matter what the amount is, it will hurt them.