Tom Hicks has launched another blistering attack on Rick Parry by deriding the Liverpool chief executive's tenure as a "disaster" and reiterating demands for his resignation.

The Anfield co-owner, whose relationship with his business partner, George Gillett Jr, has disintegrated over recent months, claims Parry has taken the club backwards.

"Look at what's happened under Rick. It has been a disaster," Hicks said. "We have fallen so far behind the other leading clubs.

"We should have the stadium built by now. We have a few major sponsors when we should have 15.

"We have still got the top brand in the world of football but that's no good if you don't know how to commercialise it.

"Rick needs to resign from Liverpool FC. He has put his heart into it but it is time for a change.

"You have to be able to work with the manager and Rick has proved he can't do that."

In a revealing and wide-ranging interview, the American businessman admitted he had never heard of Jurgen Klinsmann before approaching the German to take over from Rafael Benitez, claimed he wanted to extend the Spanish manager's contract and insisted he will buy the club from Gillett despite the present impasse.

Hicks said: "George became good friends with [Klinsmann] a year ago.

"I get this call from George out of the blue in which he says 'have your people do their research on Klinsmann'. He and Rick set up the meeting in New York. I did go to the meeting along with my son, Tom.

"Rick Parry had already met with Jurgen alone for a couple of hours when we arrived. We all then spoke to him for another four hours.

"Afterwards I told the truth to a reporter who asked the question and suddenly it is 'Tom Hicks tried to get Jurgen Klinsmann'. George initiated it but we all participated."

However, Parry is refusing to back down, claiming it is the club's board, and not Hicks, who will have the final say on his future.

"It's for the board to ask me to resign and they haven't," Parry said. "I'm accountable to the board and this is not something the board has discussed with me. I have a duty at the moment to try and keep things on an even keel when there's turmoil off the pitch. I just want to do my best for the club. I'm focusing on the day to day. We have a Champions League semi-final coming up. There are a lot of important things to be done at the club and that's the focus."

Parry also expressed his continuing disappointment at the American's decision to air the club's "dirty linen" in public, adding: "There's a Liverpool way, which I think I understand and will stick to, and there is clearly a different way."

Meanwhile, Hicks, who arrived at Liverpool in February 2007, also confirmed his relationship with Gillett, his co-owner, had completely broken down.

"At this point it is unworkable," he said. "We started this as friends but 50-50 is a difficult business proposition because you cannot do anything without your partner's approval. We had a good honeymoon but, over a period of time, there have been issues, the stadium being the main one.

"If George doesn't sell - because I am not going to sell - I guess we stay in this position that we are in.

"It's complicated but [me buying Gillett out] is going to happen although I can't force George to accept. I am planning to make him a very attractive offer. If I had a majority on [the ownership of Liverpool] I could put more capital in.

"My goal is take all the debt off the club except the working capital needed and get the permanent financing totally in place for the stadium.

"I want the finances of the club to be secure. I want to be the majority owner of a group that buys the club and I have got a 25-year track record of being a very successful investor around the world.

"The fans don't like the fact that we borrowed a lot of money to buy the club but I will fix that."

Hicks also ruled out any chance of Dubai International Capital (DIC) taking over the club, but said he had held meetings with them in the past.

He said: "DIC has no seat at the table. They are masters of the British tabloid spin. They want to stir the pot of Liverpool to create dissension.

"I did talk to Dubai about being a 49 per cent partner but it just didn't work out. They didn't share the same vision I have and I didn't think they could become minority partners. I am not going to have any more 50-50 partners."

On his relationship with Benitez, the American said: "If I were to buy George out the first thing I would do is offer [Rafael Benitez] a one-year extension to make sure he is going to be here up to when we get the stadium. Hopefully we could have some success and then extend him again.

"Rafa and the players have their heads down. They are playing great. We communicate regularly. I know he feels comfortable with the way things are going. I think we will continue to have success. I think Rafa has unique skills, he motivates the team and we have some great players who are learning how to play with each other."

Hicks said it was frustrating that his unpopularity with some sections of the Liverpool supporters has prevented him from bringing his whole family to Anfield to watch matches. "My family loves Liverpool. The sad thing is that right now we can't go there as a family until we get this thing sorted out."