A very strong possibility, IMO. The Browns are pissed about how Johnny Football has worked out so far, and word is they're exploring other options. I think they want Mariota, too, and would probably be willing to trade both picks for the QB. Again, all this is speculation, and none of these stories really have legs until you start seeing big names like Schefter, Mortensen, and Breer reporting trade talks.
Regarding Foles, I like him. I think he's demonstrated he can play well at this level. Sanchez took the job due to injury, and kept it because he was on a roll. Sanchez is still an average QB, though. I believe Foles is better. If we got Foles and the 20th pick, plus next year's
#1 from the Eagles, I make that trade. You don't even need to throw in 2nd rounders for me.