Adrian Clarke has now hailed one Arsenal star for his remarkable work-rate and ability to improve those around him. Mikel Arteta’s current tactical setup at Arsenal is certainly working well. The team is firing on all cylinders at both ends of the pitch and the Gunners are in flying form. The North London club are currently sat at the top of the Premier League table and are unbeaten in the top flight of English football since the turn of the year. One of the big success stories in recent weeks at the Emirates Stadium has been the emergence of Kai Havertz as a striker. The German has been in fa…