Mata, who joined the Red Devils for £37 million from Chelsea, entered David Moyes' radar around a month ago, as noted by the boss during his chat with the press:
The Spaniard is Moyes' second dabble into the transfer market since becoming United's boss, but he'll hope Mata can settle quicker than Marouane Fellaini, who has struggled since his move from Everton.
Moyes took a moment to thank Ed Woodward, United's often under-fire executive vice-chairman, for finalising the deal:
Mata has the ability to positively impact the champions' struggling season, as right now, the side are six points away from a Champions League spot.
Although he isn't the defensive midfielder United so desperately crave, Mata's creativity will freshen up a team that has only scored more than a single goal once in their last four Premier League games, per WhoScored.com.
The two-time Chelsea Player of the Year acknowledged the difficult situation United currently find themselves in but drew upon the club's famous unwillingness to die:
Mata confirmed he is looking forward to playing alongside Wayne Rooney, a player who could have joined him at Chelsea during the summer, as reported by Ben Smith of BBC Sport during the August 2013 transfer saga:
Instead, Rooney has reportedly entered talks to sign a new contract with the club, as noted by Sky Sports.
Both United's new signing and the potential long-term commitment of Rooney pointed toward a bright future for the Red Devils, a notion galvanised by Moyes when he confirmed the club is looking to bring in further talent across the coming year:
Many supporters are awaiting the return of Rooney and Robin van Persie after their niggling injuries have dampened United's chances of making the top four.
Moyes confirmed the duo have trained ahead of Jan. 28's match with Cardiff City, as has Fellaini:
An attacking triumvirate of Mata, Rooney and van Persie looks extremely exciting, especially when you consider the trio are amongst the most creative Premier League players of recent times, as noted by OptaJoe:
United fans are likely to see Mata in the red shirt for the first time during the Old Trafford outing against Cardiff, where he will be keen to impress.