United's title defence is all but over following a poor first season so far under new manager David Moyes.
They also face a serious challenge to qualify for the Champions League after recent draws against Fulham and Arsenal left them 11 points behind fourth-placed Liverpool.
One advantage they have is that they have a nine-day break before their next game - while rivals Chelsea, Arsenal, Manchester City, Everton and Liverpool take part in the FA Cup - during which they have decided to embark on a short break to Dubai.
"We are going to rest a bit, train as a group and prepare ourselves for the rest of the season," said Mata, who joined United from Chelsea January for £37.1m. "Once we come back from this mini break hopefully we will win many matches."
Mata began his United career playing behind the striker in the number 10 position, but was employed on the left for the 0-0 draw at the Emirates.
The Spanish international says he is happy to play wherever his manager chooses if it is for the benefit of the team.
"Throughout my career I have played on the left, on the right and just behind the striker," Mata said. "I don't mind playing anywhere the manager tells me."
Mata enjoyed a difficult last six months at Chelsea, during which he was largely consigned to the bench by Blues boss Jose Mourinho, but he says he is enjoying life at his new club.
"I am happy at the club, very happy," he added. "I am enjoying my football, I am getting minutes on the pitch. I am in a very, very big club and I hope we finish the season well.
"David De Gea has helped me settle, the same with Chicharito (Javier Hernandez), (Antonio) Valencia, and Rafael, they all speak Spanish but everyone there has helped me.
"People like (Ryan) Giggs have been here for many years and there's (Wayne) Rooney and (Robin) van Persie, they have all treated me phenomenally well."
@ chelseablue_no1 - As for why we're doing better this year than the last two - we've obviously got a far better manager, who had a pre-season with his players and has been allowed to revert to the defensive, counter-attacking football that he did so well with previously, which was what he got the elbow for being unable to adapt from and promised not to revert to when he got the gig again. The arguement is not about ability - Jose is probably the best manager we've ever had - it's about style. Only an idiot would say that Floyd Mayweather isn't an incredible boxer. But I've never heard anyone claim he was entertaining to watch. Jose claimed we would be more attacking, more creative than his previous Chelsea incarnation. We're not. He said he wanted to keep Mata - he patently didn't. He's since admitted that he "gave him nothing". So, here we are, with Oscar out of form and having nobody to step in and do the job that Mata did so very well for us. If Jose didn't want Mata - for whatever reason - that's his call. I don't agree with it, but then I don't have to. I'm just a fan. What I object to is the disingenous claims of a manager saying one thing, but doing another. Making a player worse, just so he wouldn't have to look like the bad guy in getting rid of a player that had been so good for us, and that he couldn't take any credit for. What irritates me most is the some of the same fans that sang Mata's praises, now going all revisionist on the past and trying to make out that it's not actually Jose who has done this, or if it was, actually, it's ok 'cos Mata was never really all that anyway, and how much better we are now, despite us dropping points to the likes of West Ham, West Brom and Stoke.- zedohelay