Brock LesnarDespite word that bout agreements had been sent out to Brock Lesnar and Shane Carwin for UFC 108, it’s still uncertain if the UFC heavyweight title fight will happen on Jan. 2. According to Kevin Iole, Lesnar is still sick and still not training.

Brock Lesnar, the Ultimate Fighting Championship’s heavyweight champion, still is not healthy enough to train, his coach said on Monday.

The bout has not been rescheduled, though it is targeted for Jan. 2 at UFC 108 in Las Vegas. However, if Lesnar is unable to resume training soon, he likely will not be able to make that date and it would have to be pushed back into February. adds that Brock needs to be back training at full strength within the next two weeks, otherwise he won’t fight at UFC 108 as Iole mentioned. It’s still unclear what illness Lesnar actually has — the H1N1 swine flu virus has been ruled out with blood tests — but his camp suspects it’s mono.

With Machida-Rua 2 and Silva-Belfort off the table for UFC 108, losing Lesnar-Carwin would be a huge blow for the UFC’s “traditional end-of-the-year” event. Rashad Evans vs. Thiago Silva and Junior dos Santos vs. Gabriel Gonzaga are the two biggest fights currently nailed down for the card, and those match-ups would be weak headliners even for the standard UFC pay-per-view. If Lesnar doesn’t get better in time, the UFC will have to resort to a meaningless interim title fight if they want a five-rounder headlining the card.