Taking charge of Chelsea for the first time following his arrival from Strasbourg, Rosenior watched as goals from Jorrel Hato (45+4th min), Tosin Adarabioyo (50th), Marc Guiu (62nd), Pedro Neto (90+1st) and Enzo Fernandez (90+4th) gave him the perfect introduction to his new club

Arsenal are now unbeaten in nine matches across all competitions. They face Chelsea next in the EFL Cup semi-final on Wednesday