As we discussed yesterday, Olivier Giroud is no longer injured, and could be available to face Manchester United tomorrow. This is good news, not simply because having a player healthy is intrinsically better than that same player being injured. It also gives Arsene Wenger different tactical options -- Giroud and Danny Welbeck have different skillsets that they bring to the table, and since they're both good players, they can be employed to cater to their strengths.
So who starts tomorrow?
He's a lot faster, he has a better nickname, he might be better against a disorganized and injury-depleted defense, and he's probably (at least subliminally) motivated to perform against the team that cast him off.
If he's overcome with playing against the team he grew up with, he might not be at his best.
Slightly better hair (though that's close), a bit better at hold-up play and helping to break down a packed-in defense, presumably well-rested after a few months of injury rehab.
He hasn't played a competitive game in months, and with all their injuries I'd be pretty surprised if United sat back and tried to defend -- particularly since they're garbage at it.
BONUS ROUND: Yaya Sanogo
Hey, he has to score sometime.
Then again, he might not.