Andrey Arshavin
Being honest I always liked Arshavin, which is extremely controversial with Gooners, as many feel he was a massive failure.
The Russian superstar signed in January 2009 and in an impressive few months, which included a famous night at Anfield where he scored four goals, he injected some much need quality into a weak squad to help us qualify for the Champions League.
It all turned sour very quickly though. Gunners became disillusioned with his attitude and his lack of work rate in big games. He warmed the bench in his last two seasons at the club and with him making constant comments about how much he hated London and his laziness on the pitch, Arshavin is another one who Gooners would rather forget wore the shirt.