The popular record club signing has looked the part in his favoured central role and pulled the strings in the last Barclays Premier League outing when scoring twice in the 4-0 win at Newcastle United.
Ahead of the clash at Everton on Easter Sunday, the United boss explained how Mata is likely to play a key role in the run-in after missing the Champions League games with Bayern Munich because he was ineligible.
"One thing I will say is it’s been missed how well Mata has done," said Moyes. "I think it’s gone a little bit amiss but Mata has been terrific in his play. He’s started to assist goals and score goals and has struck up an understanding with Wayne [Rooney] and with who [else] he’s played with.
"Juan has been a little bit overlooked. I could nearly say you don’t want to talk about anything so positive, but he’s been really good."