Premier League duo Arsenal and Chelsea are prepared to go head-to-head to secure the services of Wolverhampton Wanderers' Helder Costa this summer.
Arsenal legend-turned-pundit believes that Chelsea's shrewd hire-and-fire policy is the key to success for his former club.
Former Liverpool forward Stan Collymore has urged Chelsea to open their chequebooks to sign Arsenal contract rebel Alexis Sanchez in the summer.
Chelsea are reportedly stepping up their pursuit of German international Marco Reus, as the club began to look at alternatives for Michy Batshuayi.
Premier League side Arsenal will seek to break Liverpool's excellent run against 'Top Six' opposition when they make the visit to Anfield this weekend.