I could see that, but only if Alonso left. I don't know, but think that the talks at RB broke down over number one status. I don't think RAI necessarily wants number one status, but he doesn't want someone else to have it either, which would be the exact problem he'd have if he joined Alonso at Ferrari.
I think his best fit would be Mclaren or Mercedes, but no one is talking about that. He's as fast as Rosberg but brings massive consistency to the table.
I'm concerned that because Lotus isn't quite a top team, they will be a little more behind in the first year of the big rule changes.