Former Middlesbrough midfielder, Robbie Mustoe has criticized Kai Havertz, saying the versatile forward is not effective in the midfield role he plays under manager Mikel Arteta. This is coming after Arsenal’s recent shocking Premier League 2-1 loss against Fulham. Havertz has scored three goals in his last seven Premier League appearances for Arteta’s side, but failed to make an impact against Fulham. Notably, the Germany international was unable to register a single shot on goal or complete a single dribble during the encounter. “The struggles of Kai Havertz continue and this is what it is, …