Celta Vigo striker Iago Aspas insists he isn't bothered by his critics in the English media.

The former Liverpool forward has rebuilt his career at Celta, but was hammered for his quiet performance in their Europa League semifinal first-leg defeat to Manchester United.

Ahead of the second-leg in Manchester, Aspas declared: "I have nothing to prove to anyone.

"There is no need and I think I have already proved my worth by scoring a goal against England with the Spanish team."

He continued: "Winning will be a dream come true.

"I tell the fans to keep the faith."