David Moyes returned to Everton to sign Marouane Fellaini on the final day of the transfer window.
The Belgian became the United boss' first major signing since taking over the reins from Sir Alex Ferguson in July.
This week's trivia question is:
Name the three previous occasions when a United manager has returned to his former club to sign a senior player.
Please note that we are only referring to the club the manager left to join the Reds.
Click here for the answers.