By Tzvi Machlin The fate of Cleveland Browns quarterback Baker Mayfield remains a mystery despite him clearly not being in the Browns’ plans anymore. While this has been shocking to some, it hasn’t been to Colin Cowherd. On Wednesday’s edition of The Herd, Cowherd addressed a report that league executives are “shocked” that Mayfield hasn’t found a new team yet. Cowherd seemed to diagnose the problem immediately: Mayfield’s personality. The Fox Sports pundit attributed the lack of teams wanting Mayfield to Mayfield’s priorities being in his own brand. He referenced the “commercials, big persona…