This isn’t a likely option, but merely a possible one. It all really depends on what the market looks like for Baker Mayfield, and what the courts and NFL decide to do about Deshaun Watson and his 22 allegations for sexual misconduct and sexual assault. If the Browns find out before too long that the league is planning on suspending Watson for half, most or even the whole season, then the Browns may try to make a deal with Mayfield.
Jacoby Brissett is not a player the Browns can win with, he struggled in Indianapolis as a member of the Colts in a not-too-dissimilar offense. If Mayfield isn’t moved by the time a decision is rendered by the league/courts, then keeping him becomes a “best-move” option.
That all comes down to how willing he is to return to the team, knowing he’s basically a mercenary at this point; playing this year to get paid next year. It’s very unlikely, as Mayfield is not about to want to help the team that scorned him for a man with 22 civil suits, and why would he, but it’s a possibility.
A remote, minuscule, don’t-place-a-bet-down possibility but a possibility nonetheless. It can’t be ruled out, after all, the Browns were out of the Watson sweepstakes. And should’ve remained out. So if the Browns can convince Watson, the Browns can convince Mayfield.