By Josh O’Brien Arsenal have a better chance of winning the Champions League than the Premier League according to ex-Gunner William Gallas, despite a glaring transfer oversight. Mikel Arteta’s men have seen their title credentials called into question in recent weeks, having lost their last three games across all competitions. The Gunners have won just once in their last seven and in turn now sit fourth in the Premier League, five points adrift of table-toppers Liverpool. One theme throughout this poor run of form has been some wasteful finishing, with the likes of Gabriel Jesus, Kai Havertz a…