The Catalan giants have the advantage after Messi scored twice inside the closing 20 minutes to put his side on the brink of a place in the quarter-final ahead of the return-leg in three weeks time.
Gunners boss Arsene Wenger has admitted his disappointment at the result…
Elsewhere Italian side Juventus came from two goals down to draw 2-all with Bayern Munich, but the German champions will be hoping to build on their two away goals during the return-match at the Allianz Arena.
