Arsenal's Potential 4-2-3-1 Starting XI vs Watford

High flying Arsenal will face Watford at the Emirates when the Premier League returns in the midweek. Who will come out on top?
The Gunners absolutely ripped Southampton apart in the FA Cup yesterday by beating them 5-0 in their own backyard. On the other hand, the Hornets suffered a defeat at the hands of Millwall earlier today.
Watford have been in poor form, their last PL victory came way back on December 10, 2016 (v Everton). Therefore, Arsenal should be considered clear favorites to earn all three points on Tuesday night.
As far as the team news is concerned, the Gunners only have one player out injured (PhysioRoom) in the form of Spanish international Santi Cazorla. Elneny is on international duty and Xhaka is still suspended.
Walcott and Welbeck were brilliant vs the Saints yesterday. However, they have recently recovered from injuries and will probably start on the bench vs Watford.
Here is Arsenal’s potential 4-2-3-1 starting XI vs Watford.
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