I think Mario is more likely to go. I wouldn't be certain Conte could sort him out thought, nor that anyone else could. Maybe time though...
Tevez isn't going to extend imho too.
hmm, thing is, who wants tevez ?
First, he'll demand a simular salary as he gets at city, very few sides that can afford that.
The teams who can, generally are stacked on forwards, so they have to reason to swallow his salary and behaviour.
Apart from PSG, i dont see any other option for him then to renew with city
Balotelli ? dont think conte wants him. Not sure if anyone does apart from milan really

but milan cant afford him.
Dzeko ? would be great but, dont think city will sell him, he performs well despite not beeing a starter