The Blackburn attacker, who scored twice at Old Trafford on New Year's Eve, has also hit the net for Portsmouth and Middlesbrough against Sir Alex's side at league level as well as Maccabi Haifa in Europe.
We would like to know, firstly, which player has netted against the Reds in the Premier League with FOUR different teams and also the five others who, like Yakubu, have achieved it for three clubs.
Please note that we are only including Premier League strikes so the likes of Steve Stone and Darren Ambrose, who have scored against United for three clubs but including cup competitions, do not count. This is from our research based on the goalscorers credited in the official United Yearbook.
Good luck! Check out the answers here and look out for another poser next Thursday.