Arsenal fans had plenty of what-ifs during Arsene Wenger 's time in charge, but the one which produces the most soul-searching concerns Abou Diaby's fitness.
The French midfielder saw his early career derailed by a horror tackle which prompted Wenger to raise the possibility of legal action, and he would later suffer a number of further setbacks - big and small - before retiring at the age of 32.
He expressed his sadness at people bringing up his injuries and suggesting he was made of glass after being restricted to just 214 career appearances.
