4-2-3-1: Arsenal's Strongest Possible XI for Inevitable Elimination vs Barca

Arsenal were firm favorites to win the Premier League title but since the turn of the year, they have been inconsistent and now find themselves 11 points behind league leaders Leicester City.
They were favorites to win the FA Cup for the third season running but the reigning champions were eliminated by Watford at the Emirates.
At least, they were not favorites against European Champions Barcelona and after a 2-0 home defeat in the first leg, fans know that the elimination from the Champions League is inevitable. In all honesty, it was inevitable when the draw was made.

Nevertheless, the second leg will take place and Wenger will probably start his strongest possible side, hoping against hope that the Gunners can some how turn the tie around.
Expect the likes of Walcott, Bellerin, Monreal, Flamini and Welbeck to return to the starting XI for the North Londoners at the Nou Camp.
Here is Arsenal’s strongest possible starting XI vs Barca.