Clichy was linked with a move a while ago because his contract is running out - there's been little to no noise about it since.
Think you'll find Cesc hasn't left yet, neither has Nasri and neither are certain to leave. Denilson is an example of a player who simply hasn't been good enough, while Bendtner has an inflated ego and wants to be starting ahead of RvP at 23. That's two players - Flamini wasn't a youth product.
And yes, actually - we do have plenty of players left who joined as "youths": Sagna (2007), Fabianski (2007), Bartley and Pedro (both 2007, both expected to be involved in the First Team next season; the former has played Europa League football already), Song and Szczesny (both 2006), Walcott, Diaby, Mannone, Traore, Vela (all 2005), Eboue (2004), RvP, Clichy - doubt he'll leave, Djourou (all 2003).
---------- Post added at 07:57 PM ---------- Previous post was at 07:56 PM ----------
Well - no. Because he specifically said: "all the players are realising they have a better chance of winning things elsewhere."