No it's not Marouane Fellaini.
He told ESPN: "I can't wait to play alongside [Rooney]. For me, he is one of the best players in the history of this country. He is unbelievable. He is a striker who can score, can assist and can come to the midfield to take the ball and move so I think I will enjoy playing alongside him.
"I will try to connect with him as best as I can to try and find the gaps between the rival defences because I was doing this the last season. That is my best kind of play, to be in the position I have to be in to assist the strikers."
Describing Rooney as among the best in the history of the country may sound like hyperbole, but a look at England's record goalscoring books indicates otherwise - Rooney has 38 international goals and counting, the fifth of any Englishman, ever.
Watching Rooney and Mata link up should be a mouthwatering prospect for United fans and the neutral alike, although there is some debate as to how both will fit in.
It's a lot simpler if Robin van Persie is unfit as Rooney would play up front, but ideally the Dutchman would be healthy and Rooney and Mata would have to find space in behind.
It would cause United to take a narrower approach perhaps, and abandon the reliance on the poor wing play which has dogged them over the past two seasons, and been exposed particularly this campaign.
Fans will hope for an early taster against Cardiff tomorrow night, with Rooney declared fit along with Van Persie and Fellaini, while Moyes says he hopes to involve Mata in some form.
image: © nasmac