Portsmouth boss Harry Redknapp has hit back at Sunderland chairman Niall Quinn over criticisms of their summer spending.

"I don't know why Niall's saying that. What's it got to do with Niall Quinn really?" he said.

"They've just paid five and a half to six million pound for a lad from Cardiff (Chopra). He should stop poking his nose into other people's business.

"It's not their business, they should look after their own team. He should worry about what Sunderland are doing and keep their own house in order.

"People shouldn't talk like that. I never criticise other people's teams or other people's signings, maybe that's why I've been in the game so long and why I do what I do.

"I got Sylvain Distin and Hermann Hreidarsson on free transfers. I paid money for three players, and I have no doubt Sulley Muntari in particular will be a big success.

"They offered the same amount of money for David Nugent that we did but he chose us. Maybe he's upset about that."

Quinn had named Pompey as one of the teams responsible for pushing up transfer fees for players who cannot justify the price tag.

"If I was going to spend a fortune on breaking the bank, I would be going after the players Liverpool or Manchester United wanted to sign," said the Sunderland chairman.

"But, in the middle, people are fighting each other and raising the prices for the same players. You can see it with West Ham and Portsmouth."