Rooney signed a new record deal on Friday.
"I remember when he came to see me," Moyes said. "I said to him: 'If you ask me what's missing - I think you've gone a bit soft'.
"I thought he hadn't been the hard-working, aggressive player he was. But now in games people are saying: 'Look at the effort he is putting in.' It's his work-rate, not just for himself but for the team. He's become an all-round team player who is also a technically gifted footballer."
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