Brace yourselves, Arsenal fans. One man is about to have you exploding with rage all over again.
Remember Diego Costa? The really angry-looking bloke who got Gabriel Paulista sent off after whacking Laurent Koscielny in the face back in 2015? Yeah, that guy.
The former Chelsea striker and arch-enemy of the Gunners faithful could be making his return to the Emirates for Atletico Madrid in the Europa League semi-final, if he recovers from a thigh injury.
Costa, who has three goals in six games against the north London side, rarely plays 90 minutes without sparking outrage and his rivalry with Arsenal has several memorable episodes. Most recently, Rob Holding called him a 'nutter' in last season's FA Cup final against the Blues.
But the most unforgetable battle came in a fiery 2-0 defeat to Chelsea at Stamford Bridge in which Arsene Wenger labelled the striker's behaviour 'disgusting'.
The 29-year-old loves to play on the edge, but his antics that day were nothing short of disgraceful. Yet, in typical Costa fashion, he managed to stay on the pitch despite launching verbal and physcial assualts on both Gabriel and Koscielny.
He hasn't always got the better of the French centre-back, though. Costa was comfortably locked away in Koscielny's pocket during Arsenal's 3-0 victory in the league last season.
The Atletico forward left the field holding his thigh in last night's quarter-final second leg against Sporting Lisbon and Arsenal fans may be hoping that turns out to be serious.
If not, it all makes for an absolutely mouth-watering clash, although Gunners mouths are more likely to be frothing with fury.