Browns beat writer Mary Kay Cabot answered a question about the team using Terrelle Pryor as a TE and/or a WR.
Cabot: The Browns will work Pryor primarily at wide receiver, but if he demonstrates he can play tight end, I can see them giving him a shot there too based on his size (6-4, 233) and athleticism. Most of the skill players line up at various spots anyway, so the lines are definitely blurred. I'm guessing that [offensive coordinator John DeFilippo] was willing to give Pryor a chance because he worked with him in Oakland and got the most of him that anyone in the NFL has as a dual-threat quarterback.
As Cabot says, it's worth a shot. But it could be a difficult transition to receiver, or TE, for Pryor, especially in such a compressed time frame.