Chael Sonnen continues to make things interesting while he is in Brazil filming The Ultimate Fighter with Wanderlei Silva.

The two are scheduled to meet in May at UFC 173 in Las Vegas as the co-main event to UFC middleweight champion Chris Weidman and Vitor Belfort.

Previously, a sticking point in making the contest happen was Silva’s desire for pay-per-view points. It would appear all hurdles were cleared when the fight was positioned on the Memorial Day Weekend card.

However, Sonnen mentioned on Twitter recently that he gets to decide where he faces “The Axe Murderer.” And “Sin City” is out of the question.

So, we could be back at square-one in regards to Sonnen and Silva finally settling their differences inside the Octagon.