The spokesman said Umenyiora refused to practice Thursday night and the New York Daily News quoted a source as saying the player told team officials he may need surgery to repair a torn meniscus in the knee.
Umenyiora "says he has a sore knee," the team spokesman said.
The missed practice came after the team refused Umenyiora's demand to be given a $10 million per year contract or be traded to a team that would offer him the sum. Tony Agnone, the player's agent, was given until Wednesday to find a team willing to trade, but was unable to come up with a trade acceptable to Giants General Manager Jerry Reese.
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