Crystal Palace chairman Steve Parish has slammed Channel 4 for their How to Buy A Football Club documentary, in which a Thai businessman is alleged to have claimed he could buy the Eagles.

The Dispatches programme, screened on Monday, was investigating Joe Sim, who, working with former England captain Bryan Robson, was filmed saying he could buy more than one club in the Football League and circumvent rules which forbid the same person owning more than one team.

The programme claimed he intended to set up a fund and use it to buy clubs in the Championship or League One and get them promoted to the Premiership before selling them off for a profit.

The majority of the investigation centred around Sheffield United, but when Dispatches' undercover reporter pulled out of that deal, he alleged he was offered another eight clubs to buy, including Palace.

Eagles' chairman Parish watched the programme but was not impressed.

"Personally I thought it was poor journalism," he said.

"I don't think there was anything there and not many people in football are surprised that that is going on.

"Foreign people want to buy clubs, the only scandal that was there was buying two clubs through an investment fund.

"I thought Bryan Robson came out with a lot of credit, they tried to push him into an area he didn't understand.

"They cobbled something together in the end because they didn't have anything.

"Then to say at the end Crystal Palace are for sale, well what in the world is not for sale?

"If they were going to give us £100m and put money into the club then what would you expect us to do?

"We have gone on record before and said that if anybody rang up and expressed an interest in the club who might be able to take it further than us and invest more money, then we would have to look at it.

"I have had two or three meetings with people where I made it clear that the best interests of the club had to be above all else."

Palace completed their fourth signing of the summer yesterday, with Norwegian left-back Jonathan Parr switching from Aalesund.

"We are very pleased with how the summer has gone," said Parish.

"And we are on target with the spending."