Lampard believes Mata has give the Blues the edge in their battles for success this season – and is bringing something different to Chelsea’s play.
“He’s definitely added a lovely dimension to our team,” said Lampard. “We had a very good unit but it’s great to have someone with that sort of jinky, creative ability that can offer something else – a little bit like David Silva does at Man City.
“He’s got that similar quality and that is only going to improve us. He will get even better for us as well.
“Trust me, a player like Mata has the quality to play at Bolton or anywhere.
“Maybe the more physical players around him have to fight the battle with Bolton but when you have got a player like Mata, he can always unlock the door and that’s priceless.
“He deserved his great reception in Valencia. To see what high regard they hold him in there showed the player that he was and the person that he is.
“He is going to be a massive player for us – and he is obviously held in the greatest regard in Spain.”