Brock-LesnarUFC heavyweight champion Brock Lesnar, sidelined since falling ill in September, is unlikely to return to the Octagon in 2010 due to more undisclosed health problems, according to an update posted on an unofficial Lesnar Facebook page.

“Brock has had more problems (we can’t say what they are) and could be out all year if things don’t get better,” read the update.

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Lesnar had been targeted to return this summer, but UFC President Dana White said a follow-up with doctors this week would determine when, or if, Lesnar could resume his fighting career and it has apparently been determined that he won’t be able to do so until 2011 at the earliest.

The biggest question now is whether Lesnar will be stripped of his title and, if so, whether the upcoming interim championship matchup between Frank Mir and Shane Carwin, slated for UFC 111 in March, will be for the vacant title.

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