Marshall could be a good fit in Cincinnati.
Marshall and Chad Johnson on the same team smells like danger. The broncos have it set up where the Bengals would only have to give up a 1st round pick. Look at what you would receive in return. A veteran Wide Receiver who has experience and he would be surrounded by a good running game, good receivers, above average o line and a good quarterback.
The Bengals 1st round pick is sitting at # 21. It would be like selecting Marshall in the late 1st round. He would be a much better option than T.O. He is not a team player at all. The Bengals would need to lay the ground work for Marshall by letting him know of what they expect of him. He needs to play the game like a man. No more losing your temper, like a 7 year old. They should let him know up front that they have zero intentions of dealing with that attitude.
The Bengals should make this move and realize that they have about a 3 year window with Carson Palmer and Chad Johnson. If they did get Marshall, they should use almost every one of their draft picks on defensive players to build for the coming years. The Bengals should consider going after Marshall and forgetting about T.O. I think they would get a better all around player in Marshall.