3. Joel Campbell and Erik Pieters
The Arsenal winger has only recently gone through a Francis Coquelin-esque rise in prominence and by the looks of things, Theo Walcott will likely be sacrificed for him when Alexis Sanchez returns from injury. After an impressive midweek display, he will feature on the right wing, locking horns with Erik Pieters, who has been as consistent as Nacho Monreal this season.
The Dutch international has been a no nonsense leftback, having not committed even a single defensive error (as per Squawka) in the league this season and how he fares against the 23-year-old winger could have a massive impact in the game. Given the eager beaver of Joel Campbell, Erik Pieters will not have a moment to blink at Britannia Stadium later today.