He is a decent player on his day, but is a bit of a difficult character.
A couple of years ago was throwing punches at Neil Lennon at a Hibs training session after a row. Doesn't sound like he was the work rate for a Farke team.
https://www.dailyrecord.co.uk/sport/football/football-transfer-news/inside-explosive-neil-lennon-row-13911981