(Pictures) Sanchez, Ozil All Smiles As Arsenal Train Ahead Of Crucial Barcelona Tie

Arsenal host Barcelona in the round of 16 clash in the UEFA Champions League tonight. The Gunners were involved in their final round of training before they lock hors with the Catalans.

Arsenal are undefeated against Barcelona at the Emirates recently and will be hoping to repeat their famous 2-1 victory when Arshavin finished a superb counter attacking move.

Here are some pictures from the training ground;