The programme's stars Teri Hatcher, Eva Longoria, Marcia Cross and Felicity Huffman are currently in talks to continue working on the drama, which is in its seventh season.
Cherry has now told TV Guide that he wants the cast to renew their contracts.
"The actresses are still in hot and heavy negotiations, so as of this moment everyone is hopeful and optimistic that we'll be returning for an eighth season," he said. "But until the women have signed on there is no guarantee."
Cherry added that if the stars worked out a deal, he would expect the show's network ABC to order two more seasons so that the series ends in 2013. Cherry's own contract comes to an end that year.
"I think that's what everyone would be happy with," he said. "I think nine years would be a really good run."
He continued: "I've specifically asked [ABC] to please get the deal done as quickly as possible so I can know. I would hate to have to wrap up Desperate Housewives in an untidy fashion just because they weren't able to make a deal. But everyone's pretty optimistic a deal will be made."
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