5 Things We Learned From Bayern Munich's 5-Goal Demolition Job of Arsenal

It was perhaps predictable, although that didn't make it any easier for Arsenal fans.

The Gunners were once again on the wrong end of a 5-1 scoreline at the Allianz Arena as a rampant Bayern Munich side look to have all but ended the Champions League last 16 tie with the second leg still yet to play. 

Despite matching their opponents for much of the opening 45 minutes, Arsene Wenger's team caved in once again when under pressure and are facing elimination from a competition where they have failed to reach the quarter-finals for six consecutive years. 

Here are five things we learned from Wednesday night's match....

5. Laurent Koscielny's Injury Was the Catalyst for the Collapse

It's impossible to know quite why the Gunners collapsed so spectacularly. In all likelihood it points to the team's mental weakness but one contributing factor was surely the loss of captain Laurent Koscielny through injury. 

The Frenchman was replaced by Gabriel Paulista just after the break and with an air of inevitability, Bayern began to tear Arsenal apart and find the net all too easily in the centre-back's absence. 

It would be wrong to suggest that Koscielny alone would have prevented such a disaster from occurring, but there's no doubting that his withdrawal came at the wrong time for his team and perhaps escalated their demise.

4. Arjen Robben Has Still Got it

It doesn't take a genius to work out that letting Arjen Robben cut inside on his favourite left foot is a daft idea. 

But regardless of Francis Coquelin's incompetence, the Dutchman rolled back the years by scoring the goal of the night when he sent a stunning long range strike into the top corner to open the scoring. 

At 33 years of age, the winger is entering the twilight stage of his career but showed the world that he still possesses the skill and talent to perform on the big stage with a terrific individual display.

3. Alexis Sanchez Can Start Packing His Bags

You can't help but feel sorry for the brave Chilean whose tenacity and persistence makes him stick out in this Arsenal team like the proverbial sore thumb. 

Sanchez's winning mentality means he is simply too good for the Gunners and at 28, the striker is hitting his peak so needs to be at a club where he can win trophies. 

Arsenal can offer him ridiculous money, they can offer him half of the Emirates if they so wish but whatever is said in the contract negotiations, Sanchez would be silly to sign a new deal and stay in north London.

The forward deserves better from his teammates and whilst the Gunners used to sell their best players for financial reasons, they may start losing them because they simply aren't a top side anymore. 

2. Deja Vu for Arsene Wenger as His Team Cave in Yet Again

Arsenal have suffered some pretty horrendous defeats over the last few years, especially when it comes to the big games, but this latest embarrassment is right up there with some of their worst. 

The Gunners have often stated that past experiences have made them strong enough to compete with the best sides, but having been stuffed out of sight at the Allianz just last season, the only thing we have truly learned about Wenger's men is that they have literally gone nowhere in the space of 16 months. 

The defeat to Bayern was almost sickening for the neutral, let alone Arsenal fans, who must surely wonder if this broken record will ever show signs of changing.

1. Bayern Are Still a Force to Be Reckoned With

The pre-match headlines had surprisingly suggested that all was not well at the Allianz and that this was perhaps Arsenal's best chance to beat a Bayern side torn apart by dressing room unrest.

However, whatever problems there are in Munich, they can't be that bad if the team are still capable of dishing out such thrashings. 

Ancelotti's side proved that despite the bad press, they are as strong as ever and with Barcelona seemingly set to crash out, the German champions will fancy their chances of going all the way in the Champions League and if nothing else, Wednesday's mauling will have helped the team regain their fear factor. 

Just imagine how good they'll be when they aren't too busy fighting one another...