This is an interesting move. There were obviously issues with Cutler but that offense had Josh McCown playing like a probowler in 2013. The guy was a terrible head coach though, no question about that.
Marshall would be an interesting pick up. He's only 30, but he's a very physical receiver and he dealt with health issues last year. Could be on the decline. He'd be a good pick up though for the Ravens -- Especially given the uncertainty of Torrey Smith and the age of Steve Smith.
Then again, hard to know if Trestman and Marshall got along.