Louis van Gaal has been attempting to bring the glory days back to Manchester United since he took charge in the summer.
So far the Dutchman has predominantly focused on improving the attacking side of the club by adding the likes of Radamel Falcao and Angel di Maria to his squad.
Van Gaal has not, however, addressed the situation at the back.
Rio Ferdinand, Nemanja Vidic and Patrice Evra, three players that have been the mainstay of United’s back four for over seven years, all left in the summer.
The Red Devils have struggled to have a consistent pairing in the middle of defence as injuries have wreaked havoc at the club.
With ambitions to finish in the top four, they are on course to achieve that going into the busy festive period.
To ensure LVG achieves his targets, he needs to invest in at least one top central defender.
Here is a list of five defenders that he could sign in January.
Click BEGIN SLIDESHOW to see the choices.