Browns, Panthers and Mayfield all losing the trade. The two biggest storylines for the Cleveland Browns this offseason revolved around the quarterback position. Once the team decided to pursue QB Deshaun Watson, starting QB Baker Mayfield requested a trade. The team initially denied the request but, after surprisingly acquiring Watson, started looking for a trade. The Browns finally found a trade partner in the Carolina Panthers but the value in return was minimal. Cleveland had to eat a large chunk of salary, Mayfield had to accept a reduction in salary and Carolina gave up a conditional draft pick based on…