Depends if he wants a big move despite seeing out his deal. If that's the case he might show up like a lot of players do playing for a move. As long as it benefits us it's good. I'm sure Pep won't allow passengers in the side.Sterling is considered a shoe-in for England, regardless of how many games he would get for us between now and the World Cup.
I'd argue his motivation, mainly coupled with his contract situation, would not give City the player we actually need him to be next season, either side of that tournament.
Should he decide to see out his final year, of course.