Besic is such a frustrating story since you saw the potential he had but he was so badly managed. It was painful to follow his time in Everton and it is painful now reflecting on what happened. A complete shitshow but that is the past now. He is in such a weird place in his career right now and to be honest he should retire and do something else. Football is a waste of time for him since he will only feel he could have done better than where he is right now. I cant imagine him getting signed by a good club that can lift his career and also his agent is useless and costed him a transfer to Middlesbrough in the first place.
He still lacks a lot of routine as a central midfielder(remember that he was a central defender that Martinez wanted to reform into a central midfielder). Due to his many injuries that set him back a lot he still have the same footballing brain he had when he started for Everton. He has not made any progress, he makes the same misstakes and it is just frustrating to watch. He has his flashes of brilliance and where you think that he will possibly turn this around and make progress but then he either gets injured or something else happens that disrupts this and he is back to the same old player who does unintelligent decisions on the pitch.
I was a big fan of him but now rooting for him has become a joke for me. I will still buy every shirt of him for every team he has played but it will just be out of fun and not because I respect him as a footballer(that ship has sailed a long time ago)