Former UFC champion Sean Sherk has posted on Twitter that he has no problems facing BJ Penn for a second time.

Penn lost his opponent, Rory MacDonald, on Saturday night after it was reported that MacDonald suffered a deep cut in training. The two were expected to face each other at UFC 152 in September.

Sherk, who lost the title to Penn back in 2008, has not competed since a decision victory over Evan Dunham in 2010.