With new signing Juan Mata on board, the David Moyes project is finally underway.
After a disappointing summer transfer window, with only one signing in Marouane Fellaini, United fans have received a late Christmas present with Moyes delivering the creative talents of Mata.
However, as the United manager has reinstated many times, similar signings must be made if United are to challenge on all fronts once again.
Although Moyes' side have been linked with high-profile attacking players during this transfer window, such as Marco Reus and Toni Kroos in Germany; this still doesn't solve their midfield crisis.
Kroos would be another fantastic attacking option, who could prove to be the successor to Paul Scholes that United have been crying out for this season, but will he provide the steel and defensive cover United need? No.
The prospect of Robin van Persie, Wayne Rooney, Adnan Januzaj and Mata all playing together is an exciting one for the Old Trafford faithful, however, who will sit in behind them? Yohan Cabaye could be the answer.
The midfield maestro is used to playing as Newcastle's creative dynamo in the centre-midfielder, but he has been playing as a defensive playmaker, similar to Michael Carrick at United.
With Alan Pardew admitting he doesn't know if Cabaye will still be at the club, the opportunity beckons for Moyes to swoop in for the midfielder who would relish playing Champions League football ahead of playing in the World Cup in Brazil.
Moyes' may look at a more conventional, hard-tackling midfielder, with numerous names also being linked, such as Arturo Vidal. The Chilean may not be available this January, which may force Moyes to look elsewhere.
Ilkay Gundogan has been continuously linked with United, after stalling on contract talks with Borussia Dortmund and may be the type of player United could realistically get. But again, he may not be available in the summer.
A centre-back is essential for United, possibly even more than a defensive midfielder. With Nemanja Vidic and Rio Ferdinand's careers coming to a close, the Red Devils need a dominant, experienced centre-back who they'll get a good six years of service from, just like when they signed the duo.
United need a defender who can lead by example, and be a definite starter on the team-sheet to lead Jonny Evans, Phil Jones and Chris Smalling.
A world-class center-back will unlikely be available in January, but United should be considering Eliaquim Mangala, who has played for Porto over 50 times, is only 22, but plays with a much more mature style.
Other defenders such as Mats Hummels and Ezequiel Garay could be other possible targets for United to chase down in the summer as they rebuild their squad.
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