Leandro Trossard is one of several players who have been slightly below-par at Arsenal since the October international break. In the absence of Martin Odegaard, Trossard has often been deployed as the number 10 at Arsenal of late, playing just behind Kai Havertz. And in truth, it’s not a role the Belgium international has thrived in recently, even though he was excellent in the pocket at times last season. Trossard’s best moments so far this campaign, like his match-winning cameo against Aston Villa, came from the left, which remains his strongest position. That being said, ahead of facing Che…