By Alek Arend When the Cleveland Browns acquired Deshaun Watson in a blockbuster trade, they essentially showed Baker Mayfield the exit. That may have been a mistake. The NFL is still undecided on a punishment for Watson. But the expectation is that he’ll get some sort of suspension. In such a scenario, will they really turn to newly-signed Jacoby Brissett? Robert Griffin III doesn’t think so. The former Heisman winner thinks the Browns should offer Mayfield the olive branch, smooth things over, and get him to play in the scenario Watson gets a significant suspension. “I think the Browns shoul…