FILE - In this 2011, file photo, Detroit Lions football...

FILE - In this 2011, file photo, Detroit Lions football player Jerome Harrison is shown. ESPN, citing two league sources it did not identify, is reporting Thursday, Oct. 20, 2011, that Harrison has a brain tumor. Lions coach Jim Schwartz wouldn't confirm or deny the report, citing a privacy issue.

ESPN reported Thursday that Lions running back Jerome Harrison has a brain tumor. The network cited two NFL sources it did not identify. It said the tumor was revealed when Harrison had a physical after being dealt this week to the Eagles in a trade that was voided by the discovery.

Lions coach Jim Schwartz wouldn't confirm or deny the report, citing a privacy issue. He said Harrison is back on the team's 53-man roster.

Harrison's agent, Mitch Frankel, did not return phone and email messages.

The Lions wanted to trade Harrison for Ronnie Brown and a draft pick. Detroit needs backfield help because starter Jahvid Best suffered his third concussion Sunday.

Mara heads Management Council

Giants owner John Mara was appointed chairman of the NFL Management Council, the league's most powerful committee. Mara replaced Panthers owner Jerry Richardson as head of the league's main labor committee.

Commissioner Roger Goodell announced several changes to the leadership of league committees. He also has formed one on health and medical issues that will be chaired by 49ers owner John York.

Taking concussions into courts

After congressional hearings, increased media attention and revised rules, the NFL's concussion saga has entered its next phase: litigation.

More than 125 former players are suing the league -- and, in most cases, helmet-maker Riddell -- via at least five complaints brought in state or federal courts during the past few months. They say the NFL should have done more over the years to warn about the dangers of head injuries and should do more to help retired players.

Richard Lewis, an attorney representing players in a class-action suit filed in California state court, said: "We've moved on from a debate about whether or not it's really a problem -- it's clear it is -- to the next question: What do we do about it?"

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