Another season, another series of missed opportunities for Arsenal.

After faltering in the league on multiple occasions over the last few months, effectively ending their title bid, and suffering another humiliating defeat at the hands of Bayern Munich, questions are again being asked of Arsene Wenger. It's an all too familiar story for supporters and the seemingly annual 'Wenger Out' movement is reaching new heights.

Is it as simple as just replacing the Arsenal boss, though? Is that really the key to future silverware? He's delivered massive success for the Gunners during his reign, acting as the guiding figure for the club in the modern era. It's inarguable that they wouldn't be where they are today without him.

That has, of course, bought him time at the club down the years when things haven't been going their way, time that some feel is now up.

However, there's still an argument that he should stay on a bit longer yet.

Here are FIVE reasons Arsenal need Wenger to continue as manager...

Look what happened at Man United

For Arsenal fans demanding success and thinking that it will come as soon as Wenger leaves, you only need to look at Manchester United to see that isn't guaranteed. When Sir Alex Ferguson left there were many who thought it would usher in a bright new era at the club, but that has been far from the case.

They arguably still haven't recovered from Fergie's departure, and are still unable to challenge effectively for the Premier League title, while being at risk of not even making the top four.

The after-effects of Wenger leaving Arsenal would be similar. He's a massive force at the club, everything is built around him, so if he leaves abruptly then it could set the club back years.

Consistency is better than mediocrity

While they haven't reached the highs of other clubs over the last decade in terms of league title wins or Champions League trophies, Arsenal have at least been consistent. Regularly qualifying for Europe's biggest club competition is no mean feat, especially when it's been the platform for providing a massive new stadium and attracting superstars like Alexis Sanchez to the club.

Without that consistency, Arsenal would not be where they are today. Don't forget, Arsenal haven't finished outside of the top four since Wenger's arrival at the club, which is quite remarkable.

Perhaps when that day comes then it's time for him to go, but it seems a safe bet they'll do it again this year and even still lift silverware in the form of the FA Cup.

If he goes, big stars may follow

Britain Soccer Football - Arsenal v Hull City - Premier League - Emirates Stadium - 11/2/17 Arsenal's Alexis Sanchez celebrates scoring their second goal Action Images via Reuters / John Sibley Livepic EDITORIAL USE ONLY. No use with unauthorized audio, video, data, fixture lists, club/league logos or "live" services. Online in-match use limited to 45 images, no video emulation. No use in betting, games or single club/league/player publications.  Please contact your account representative for fu

Wenger is one of the most respected figures in European and world football and a massive part of the reason Arsenal have been able to attract some of the biggest stars to the club over the years.

Thierry Henry, Robin van Persie, Mesut Ozil and Alexis Sanchez are all names that have graced the Gunners' pitch down the years, all thanks to the French manager.

There's a lot of talk about Ozil and Sanchez's contracts, in particular, this season and perhaps Arsenal's best chance of keeping them at the club is retaining Wenger, too. If the players get a sniff there's a new manager coming in that may not suit their style, their personality or are even just worried a new era won't be successful, it could be the tipping point towards these players leaving.

Arsenal are almost there

Britain Football Soccer - Arsenal v Chelsea - Premier League - Emirates Stadium - 24/9/16
Arsenal's Mesut Ozil scores their third goal 
Action Images via Reuters / John Sibley
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It's become something of a cliche to say Arsenal are a bad side, or a team of bottlers, or any number of things about the club. The fact is, though, it's simply not true. Arsenal are a very good footballing side that are constantly on the edge of greatness.

Think about this season for example, after losing to Liverpool on the first day of the campaign they went on a massive unbeaten streak that had fans salivating. It went off the rails around late December but it showed that Wenger is still capable of building a team that can do wonderful things.

They are just a few players away from becoming the force fans dream of under Wenger. Given how much the club and supporters have backed him to this point, they should now let him see the project out over the last few years through to completion. It's too late to turn back now. Wenger will know when his time is up and won't be shy about walking away.

He needs to be involved in the transition

Whatever happens this season it's clear that ripping Wenger right out of the equation will not be the best thing for the short and long-term stability of the club. He needs to be part of the transition in a big way and whether that means moving to a Director of Football role or bringing in and grooming a talented number two or promoting from within is beyond my expertise. What we do know though is that Arsenal need him to stick around in a major role to help with life after he goes.

He is nearing the end of his managerial career, he won't be around forever and if he's not planning for his successor already then that needs to be a priority to help preserve his legacy as the greatest manager in the club's history.