Whilst he’s not going to be wanted by any of the other top 4 teams (McLaren, Red Bull or Mercedes), he could possibly be a potential replacement for Grosjean. The problem is, Renault has no reason to get rid of him.
So which teams does that leave? The most obvious destination would be Sauber, in exchange for Perez. However, I still have my doubts over whether Perez is good enough yet (my money’s on Webber going to Ferrari). So the only possibility, assuming Massa won’t want to drop to the bottom 3 teams, is Williams. And if Maldonado doesn’t improve, there’s likely to be an empty seat by the end of the season.