#5 An exciting duel awaits
If all the aforementioned points were to be summed up, this should be an enticing affair to witness. One can see this as a step down from their previous meeting which came at the same stage albeit in the Champions League, but AC Milan vs Arsenal is a duel that can regardless produce just as equal a measure of intrigue as for how it was back then.
Form dictates a Milan victory, but Arsenal can be so unpredictable at times, that you can't really write them off. Just ask Chelsea. Despite a dismal league campaign last term as well, the Gunners defeated the Premier League winners of last year twice to claim two trophies, while they'll also look back at some of the shock results they've picked in European nights despite the odds stacked heavily against them.
So anything can happen; the door's ajar for all sorts of possibilities despite glaring differences between the sides heading into the tie. And it's this unpredictability that serves to spice it up. An exciting duel awaits.