Marouane Chamakh
Arsene Wenger signed Marouane Chamakh on a free transfer from Bordeaux in 2010 and the Moroccan striker seemed a great bit of business at first, scoring 11 times in his first 22 games.
He then inexplicably forgot how to play football and only managed 3 in his next 45 games. He turned out some of the laziest and dismal performances we’ve seen from a striker at the Emirates and is not remembered fondly by the Gunners faithful.