Hero Complex has an interview with Jeremy Renner where he says the following about a possible solo project:
Hero Complex: Will we see you in a Hawkeye movie?
Jeremy Renner: I don’t know. I think there’s always possibilities of anything in the Marvel universe. There’s gotta be a want from people to see something like that. I don’t know if there is. Maybe there is maybe there isn’t. But who knows? We’ll see.