The Cleveland Browns have yet to trade Baker Mayfield after their acquisition this offseason of Deshaun Watson.
But despite the latter facing a possible suspension, Mayfield's continued presence on Cleveland's roster likely isn't an insurance plan in that event, but it's more the Browns trying to gain maximum value in a potential trade, per Albert Breer of SI.com:
"I don't think the Browns are holding onto Mayfield as a Watson suspension insurance policy. And I think how they've operated is proof. My understanding is Cleveland's already offered to take on a good chunk of his $18.