The Spaniard arrived from Chelsea for £37.1million last month and even though he will provide further competition, the 19-year old Belgian attacking midfielder suggests he will be a great learning tool in his fledgling career.
"He is a great player and I think I am going to learn a lot from him," Januzaj told MUTV.
"He is a technical player who is very clever. He scores goals and gives assists. We are very happy to have Mata at the club. I think he has settled in and he is happy and I hope he will be happy at the club."
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