Will Liverpool maintain their title challenge?
Where Unai Emery has often deployed Pierre-Emerick Aubameyang and Alexandre Lacazette in the same starting XI this season, the former Borussia Dortmund man has often started on the left of a front three.
Arsenal could benefit from reverting to a good-old 4-4-2 formation, with both strikers starting up-front together.
They've already hit 19 goals between them this season and have simply been unstoppable of late.
With Emery undecided on who should start behind the strikers, with all of Mesut Ozil, Alex Iwobi, Aaron Ramsey and Henrikh Mkhitaryan starting there in recent weeks, his best option would be starting the duo up-top.
With Aubameyang on ten Premier League goals and Lacazette on six, their next-largest contributor is Ozil, with three.
With the German missing from Arsenal's previous two games and with three poor performances beforehand, it goes to show that the Gunners are less reliant on Ozil's influence.
With Lucas Torreira and Granit Xhaka forming an important partnership in the middle of the park for the Gunners, 4-4-2 could also suit the duo, who have made 205 recoveries between them this season, each with more than any other 'top six' midfielder.
Emery could deploy Iwobi on the left, with Ozil, Ramsey or Mkhitaryan on the right, each of which can drift in side to allow the likes of Hector Bellerin, Nacho Monreal or Sead Kolasinac to bomb forward.
It may seem out of date, but switching to a conventional 4-4-2 might just be the key for Gunners going forward.
Arsenal have been incredibly impressive of late, taking seven points from their last three Premier League games.
Wins away to Bournemouth, at home to Tottenham and a draw at Old Trafford, where they should've won, all suggested the three at-the-back is working for Emery.
In each game his side has dominated possession and look more assured at the back than previously shown with a four.
Kolasinac, despite his error which cost Arsenal dearly against United, has been impressive in the left-wing back role, creating a massive ten chances in his last three outings.
Deploying three centre-backs gives the likes of Kolasinac and Bellerin to exploit the space on the wings.
Furthermore, Emery can still play Aubameyang just behind Lacazette as one of the two creators in behind the striker.
Aubameyang has created 14 chances for his teammates this season, showcasing he is much more than just a goal-scorer.
In-fact, he's often looked a little isolated up-front on his own and is often better suited a little deeper with Lacazette up top.
This system allows more rotation within the Arsenal ranks, which will be crucial over a busy Christmas period.