With both Kai Havertz and Gabriel Jesus already at the club, Arsenal’s fan base seem a bit divided on whether the club should sign a new striker this summer. Mikel Arteta is expected to start Havertz against Villa once again on Saturday evening, a centre-forward who started this season as he finished last. Although he began life in north London as a number eight, intended to replace Granit Xhaka, Havertz has flourished in a false nine role. And instead, Mikel Merino will now replace Xhaka at Arsenal, an astute signing which Arteta has been chasing for a long time. Of course, Havertz does need …