Claudius which one are we talking about? Arteta talked a lot about ESRs change in attitude. And as I stated ESR is the one who got minutes late in the season over Vieira, even if they were limited. I get the feeling ESR has had enough of being a bench warmer. All the reports say Arsenal wont stand in his way if he wants to go, rather than they are looking to sell. It was even reported differently to the Jesus stuff that was Arsenal are open to offers.
As for Vieira I think if he wants to stay and not get boxed out he'd need to turn up to pre-season training in absolutely battle mode, ready to prove himself once and for all. Personally I don't see it though. Think with signings and the emergence of Nwaneiri imminant that Fabio is pretty much done here for intents and purposes.