Legendary former Arsenal midfielder Emmanuel Petit has now given his verdict on the progress made by Kai Havertz this season. Arsenal star Kai Havertz has silenced many of his critics in recent weeks. When the German first arrived at the Emirates Stadium, as he joined from Chelsea in the recent summer transfer window, he was a a player clearly bereft of confidence. In the early stages of his Arsenal career, he struggled to stamp his authority on games and did not look comfortable within Mikel Arteta’s tactical setup. Arteta initially planned to reinvent Havertz as a midfielder, after he had st…