Mikel Arteta has warned his players that Pierre-Emerick Aubameyang could be "very dangerous" in Sunday afternoon's fixture.
Arteta's Arsenal travel to Stamford Bridge to face Aubameyang's Chelsea for the first time since he was released by the Gunners in February. The 33-year-old was stripped of the captaincy by Arteta in December for disciplinary issues before he was given the boot.
Arsenal fans will be concerned that Aubameyang has a point to prove on Sunday afternoon. "Arsenal, it's nothing personal... I'm back, I'm Blue, I'm ready - let's go," warned the Gabon international in a controversial TV advert for the Premier League fixture.