The player's skills set allows him to bring the ball out from the back in a way not many other players at the club can do. (caughtoffside.com)
Much like other players at the club, such as Laurent Koscielny and Hector Bellerin, they feel they owe something to Arsenal for giving them a big break in major European football. (justarsenal.com)
They are both bit part players because of this and if they stay they will hamper the progress of the team and other players coming through the ranks which i guess also applies to numerous other players at the club as well. (justarsenal.com)