Perriman actually has legitimate upside if he started to put it together last season.
I used to like Richardson a lot, but he hasn't done anything in a few years. He would probably come very cheap.
I don't hate the idea of Funchess. He's still young as he doesn't turn 26 until May, and he is big and cheap.
Gabriel would fit in the system, but I think we need more of an outside receiver.
Higgins is a guy I liked in college, and he's young and will be cheap.
Demaryius is another year removed from his major injury, so maybe we can squeeze a year out of him if all else fails.
Sharpe and Robinson fit the "young, cheap and have had some moments" group.