Barcelona midfielder Cesc Fabregas says the return of Mathieu Flamini at Arsenal was a transfer coup.
Cesc believes Flamini's signing will also have an impact this season.
"That is what makes Arsenal special," he told the Daily Mail. "Because if you saw Flamini play at Milan he is not the same player and yet he was doing the same thing but it was not valued the same way.
"Arsenal have players who have great movement and Mathieu interprets that very well. And he runs something like 13km every match, something incredible. I am happy he is back."
