Premier League meetings between London rivals Chelsea and Arsenal are always interesting - but Sunday's fixture promises to be extra spicy.
The Gunners travel to Stamford Bridge for the first time since ex-captain Pierre Emerick-Aubameyang was signed by the Blues in the summer. Arsenal fans wouldn't have expected to face the Gabon international again following his move to Barcelona in February.
They certainly wouldn't have imagined Aubameyang joining one of their nearest rivals, but football's a funny old game. Perhaps what's most surprising is the 33-year-old's pre-match comments, which Mikel Arteta could use to his advantage in his team talk.
