The London rivals will meet in the Europa League final.
Chelsea and Arsenal meet in the Europa League final in Baku's Olympic Stadium on Wednesday, May 29.
The London rivals have crossed paths across plenty of competitions in the past and here, Press Association Sport looks through its archive at some of the best images from previous meetings.
Alan Smith opened the scoring as Arsenal won at Stamford Bridge for the first time in the Premier League-era in November 1993 (John Stillwell/PA) John Hartson, right, and Dennis Wise played in the 3-3 Premier League draw between the sides at Highbury in September 1996 (Rebecca Nolan/PA) David Platt, right, scored as Arsene Wenger's first meeting with Chelsea ended in a 3-0 win for the Gunners in April 1997 (Fiona Hanson/PA) Stephen Hughes was the unlikely two-goal hero as Arsenal beat Chelsea 2-0 at Highbury en route to the Premier League title in 1998 (Tony Harris/PA) Mark Hughes helped Chelsea exact some revenge 10 days later as his goal helped the Blues to a League Cup semi-final victory (Tony Harris/PA) Gus Poyet, right, bagged a brace as Chelsea thrashed Arsenal 5-0 in their next League Cup encounter in November 1998 (Michael Stephens/PA) Kanu scored a 15-minute hat-trick as Arsenal came from two goals down to win 3-2 at Stamford Bridge in October 1999 (Neil Munns/PA) Chelsea goalkeeper Carlo Cudicini fails to stop Ray Parlour's strike in the 2002 FA Cup final – with Arsenal going on to win 2-0 (Rebecca Naden/PA) Tony Adams lifted the FA Cup alongside Patrick Vieira as Arsenal completed the double with victory in Cardiff (PA Archive) Eidur Gudjohnsen grabbed the Chelsea goal as their Champions League quarter-final first-leg clash with Arsenal finished 1-1 (Nick Potts/PA) Wayne Bridge would score the goal to send Chelsea into the 2003/04 Champions League semi-final as the Blues won 2-1 at Highbury in the second leg (Nick Potts/PA) Jose Mourinho's first clash with Arsene Wenger ended 2-2 at Highbury in a Premier League game in December 2004 (Rebecca Naden/PA) Didier Drogba scored twice against Arsenal in the 2005 Community Shield – he would go on to be a thorn in the side of the Gunners over the years (Sean Dempsey/PA) Drogba would also score twice as Chelsea beat Arsenal 2-1 in the 2007 League Cup final (Rebecca Naden/PA) Chelsea captain John Terry was forced off during the final with the scores level after he received an accidental kick to the face (Rebecca Naden/PA) Arsenal's Emmanuel Adebayor was one of three players sent off following a last-minute fracas in Cardiff (Rebecca Naden/PA) A Gilberto Silva penalty helped Arsenal to draw with Chelsea in May 2007 – preventing the Blues from being able to win the Premier League (Sean Dempsey/PA) Drogba would prove the scourge of Arsenal once more – scoring the late winner in an FA Cup semi-final meeting in 2009 (Rebecca Naden/PA) Robin Van Persie scored a hat-trick as Arsenal won 5-3 at Chelsea in the 2011/12 Premier League campaign (Dominic Lipinski/PA) Mohamed Salah scored Chelsea's last goal in a 6-0 thrashing of Arsenal in what was Wenger's 1,000th game in charge (Nick Potts/PA) Kieran Gibbs was sent off early in the game back in 2014 – referee Andre Marriner mistaking him for Alex Oxlade-Chamberlain, who had handled on the line (Nick Potts/PA) Long-running bad blood between Wenger and Mourinho boiled over as the pair pushed and shoved on the touchline on a galling day for the Frenchman (Nick Potts/PA) Oxlade-Chamberlain scored the only goal as Arsenal beat Chelsea in the 2015 Community Shield (Andrew Matthews/PA) Antonio Conte's Chelsea lost 3-0 at Arsenal in September 2016 before embarking on a 13-match winning run which would end in title glory (Adam Davy/PA) Aaron Ramsey hit the winner as Arsenal beat Chelsea 2-1 to lift the FA Cup in 2017 (Nick Potts/PA) Sead Kolasinac marked his Arsenal debut with the equalising goal in the 2017 Community Shield (Joe Giddens/PA) Olivier Giroud scored the deciding penalty as Arsenal lifted the Community Shield at the expense of their London rivals (Joe Giddens/PA) Wenger watched his side win their Carabao Cup semi-final tie with Chelsea from the Stamford Bridge press box having been banned from the touchline (Adam Davy/PA) Marcos Alonso scored the winner as Maurizio Sarri's first home game in charge of Chelsea ended with a win over Unai Emery's Arsenal (Victoria Jones/PA) Emery's side would win the return game 2-0 in January – the last meeting before Baku (Nick Potts/PA)