From Fiveouncesofpain.com:
Lacking a main event for a tentatively planned UFC 91 event at the Rose Garden in Portland, Ore., it appears that the UFC could be turning to heavyweight sensation Brock Lesnar for some much-needed star power.
According to a report in Thursday’s edition of the St. Paul Pioneer Press, Lesnar was informed by the UFC earlier this week that they would like to add him to their November show.
Possible opponents for Lesnar include Cheick Kongo. This fight has been rumored to be the next for both fighters following their wins at UFC 87 on August 9th.
No main event has been announced for this card yet but it is also rumored that Kenny Florian and Joe Stevenson have bout agreements in hand to fight on this card.