Nemanja Vidic (Serbia):
Arguably, the greatest defender to have played at the Old Trafford, Vidic, was a long term servant of the club and helped them to a number of victories and titles. Having formed a superb partnership at the back with Rio Ferdinand under Sir Alex Ferguson, Vidic, helped Manchester United lift five Premier League titles and a few other cup titles along with a place in the final of two Champions League tournaments. He was a strong defender who had a peculiar understanding of the game and even the best players in the world struggled to beat him even in crunch games. He moved to Italy with Inter Milan from Old Trafford and announced his retirement early January this year after the termination of his contract and will forever remain as one of the best defenders the world has ever seen.