There have always been three constants in life - death, taxes and arsene wenger vowing to stay on as Arsenal manager to an equal number of people's delight and bemusement. Until now, that is.

The Mirror reported that everyone's favourite stubborn Frenchman has decided that enough is enough at the Emirates Stadium after what looks to be a second-successive failure to qualify for the Champions League.

He was expected to leave at the end of last season but resisted the pressure upon him by signing a two-year contract extension. He will now no longer see-out that contract and will embark at the close of another disappointing season where the Gunners lie 14 points behind fierce rivals Tottenham Hotspur with only five games to go.

Wenger could still go out with a bang - Arsenal are in the semi-final of the Europa League, but must overcome favourites Atlético Madrid if they want to win their manager one last piece of silverware.

More than two decades of highs and lows

There is a chance that Wenger's reputation may have been tarnished by ill-feeling amongst the fanbase in recent years - many Arsenal fans have been calling for his resignation or sacking for a few years now.

The lack of Champions League-football at the Emirates has only seen an escalation of the disillusion that seems to have finally worn-down Wenger's resolve.

However, despite recent disappointments, what the Frenchman has achieved at Arsenal should not be easily forgotten.

He hit the ground running, winning the double in only his second full season after joining from Monaco via a spell in Japan with Nagoya Grampus Eight, and repeated the feat four years later.

The team of 'invincibles' that he built to win the title undefeated in 2003/04 are still widely regarded as the best Premier League side of all time, though a certain Mr. Guardiola would probably have something to say about that.

More recently, Wenger's Arsenal has shown a particular proficiency in the FA Cup, winning the famous trophy three times in the last four seasons and claiming victory in the Community Shield every time afterwards.

All in, Arsene Wenger's honours total 17 trophies, 15 Manager of the Month awards and his induction into the English Football Hall of Fame in 2006.

Who do the Gunners turn to in life after Arsene?

The club has already announced their intention to line-up his replacement as quickly as they can, but who might be the one who takes-on the unenviable task of following in the Frenchman's footsteps?

Early frontrunners for the job are already being touted, with Leonardo Jardim one of the favourites to take the reins and follow in Wenger's footsteps by travelling from Monaco to North London.

Former-Chelsea boss Carlo Ancelotti and Thomas Tuchel, Jurgen Klopp's successor at Borussia Dortmund, join Jardim as the current frontrunners, while the Liverpool manager's predecessor at Anfield Brendan Rodgers is perhaps surprisingly in the mix as well.

Whoever does take charge at the Emirates must turn around the club's fortunes and re-establish the Gunners as a force in both the Premier League and Europe.