Arsene Wenger is to leave Arsenal at the end of the season, ending a near 22-year reign as manager.
The Frenchman departs a year before his latest contract was due to expire.
The Gunners are sixth in the league and set to miss out on a top-four spot for the second straight season, with their hopes of reaching the Champions League resting on winning the Europa League.
Wenger, 68, won three Premier League titles and seven FA Cups, including the Double in 1998 and 2002.
“I am grateful for having had the privilege to serve the club for so many memorable years,” said Wenger. “I managed the club with full commitment and integrity.
“To all the Arsenal lovers, take care of the values of the club.”
Arsenal say a successor will be appointed “as soon as possible”.
Wenger’s ups and downs
Wenger won three Premier League titles and four FA Cups in his first nine seasons in charge.
In 2003-04, he became the first manager since 1888-89 to lead a team through an English top-flight season unbeaten.
But after winning the 2005 FA Cup, they waited another nine years – or 3,283 days – for their next silverware. It came as they beat Hull City to win the 2014 FA Cup, before winning the trophy again the following season.
Wenger won his seventh FA Cup last season, beating Chelsea 2-1 at Wembley, but finished 18 points behind Antonio Conte’s Premier League champions.
His side have struggled in Europe since losing to Barcelona in 2006 Champions League final.
They were eliminated at the last-16 stage for the seventh successive season on their last appearance in the competition in 2017, losing 10-2 on aggregate to Bayern Munich.
In 2006, they moved into the £390m Emirates Stadium after leaving Highbury.
The Gunners have consistently spent less than their main Premier League rivals on new signings, but Wenger twice broke the club’s transfer record this season.
France striker Alexandre Lacazette joined in the summer for £46.5m, while his final signing was Gabon striker Pierre-Emerick Aubameyang for £56m in January.