The Manchester United and England captain is no longer seen as an automatic starter for his country but club mate Mata, who was the recipient of a lovely Rooney ball when scoring the winner in Saturday's 1-0 victory at Norwich City, suggests the versatile 30-year-old is still very much a vital player for the Three Lions.
"Wayne does not have anything to prove," Mata said in response to calls that Rooney will struggle for game time at Euro2016.
"He is a great player and will always be a great player. He can play as a striker, a winger and a midfielder as he has shown in the last few weeks.
"I would imagine that Roy Hodgson is very happy with the positions that Wayne can play in. Also with the experience he can bring to the dressing room.
"[Against Norwich] Wayne got an assist and showed very good movement. He played a great ball. Wayne is important for us no matter which position he plays in."