By Daniel Bates Since being drafted No. 1 overall out of Oklahoma, Baker Mayfield’s Browns career has been a bit of a rollercoaster ride. At times he’s shown flashes of being an upper-tier franchise quarterback in this league. However, injuries and extremely poor play last season didn’t leave a great impression on the Browns front office with a potential pay day around the corner. Now, according to Pro Football Network’s Aaron Wilson, Cleveland is not completely sold on Baker as the team’s long-term answer. Per Wilson, “Browns not entirely sold 100 percent on going forward with Baker Mayfield,…