Arsenal star Kai Havertz has enjoyed a remarkable turnaround in his fortunes, as he is now thriving as a centre-forward. There were plenty of question marks over the German when Arsenal spent £65m to sign him from Chelsea, given how he had struggled at Stamford Bridge. Havertz was brought in as a midfielder to replace Granit Xhaka, but he initially failed to perform in the same midfield role, and Arsenal’s buildup suffered. However, Mikel Arteta struck gold when he moved Havertz to a centre-forward position in January, and he has not looked back since. Arsenal’s attack fully clicked into gear,…