Team Psyche
The team psyche will be of utmost importance for both sides. In the first leg, Bayern were the more fragile of the two sides having lost their previous two Bundesliga matches. For the second leg, the tables seem to have turned. The Gunners will no doubt be kicking themselves for not winning the first leg, and will be under pressure at the Allianz Arena. The 2-0 loss against Aston Villa suggests that, despite playing attractive football, Arsenal still have a tendency to buckle in high-pressure situations.
On the other hand, the men from Munich need to remind themselves that there is only one European-pedigree team in this particular encounter. Bayern Munich have been there before and know what it takes to get over the finish line.
Harry Kane needs to lace up the right pair of boots
On occasion even the best of players can experience a poor patch of form. That has been the case for Harry Kane in the Bundesliga over the last few weeks. Little things sometimes make the biggest difference. The England captain needs to shake off the cobwebs and once again hit his stride on Wednesday. Over the years, the Gunners have seldom been able to neutralise Kane. If he is on his game on Wednesday, Arsenal will struggle to contain Bayern regardless of whoever forms the attacking trio behind the striker.