Jul. 7, 2012; Las Vegas, NV, USA; UFC fighter Chael Sonnen in the ring prior to his fight against Anderson Silva (not pictured) during a middleweight bout in UFC 148 at the MGM Grand Garden Arena. Mandatory Credit: Mark J. Rebilas-USA TODAY Sports

Chael Sonnen and Wanderlei Silva are on a collision course towards their May 31st battle in Sao Paulo, Brazil. Both men have a mutual disdain for one another, and coaching against each other on The Ultimate Fighter Brazil: Season 3 has added fuel to the fire.

Scheduling the fight has been a nightmare for the UFC, who had to deal with moving the fight to multiple different cards and Wanderlei supposedly refusing to sign the contract. Chael believes that Wanderlei wants out of the fight, as referenced in this tweet yesterday:

Contest Announcement: Be the first to name the fake injury Wanderlei uses to weasel out of our fight… — chael sonnen (@sonnench) April 1, 2014

In a recent interview with MMAFighting, Chael reiterated that he believes Wanderlei will pull out of the fight with an ‘injury’:

It’s one of those things where, something stinks here. He’s talking more than ever. He’s saying things like ‘Chael better not get hurt’ and ‘Chael better not fall out.’ I’ve never pulled out, ever. If I’m hurt or I’m sick, I just show up. Never do I complain or I pull out. What that’s telling me, he’s going to claim he’s hurt. He’s just doing all these things to tip his hand here, and something stinks and I don’t know what it is, but something’s going on.

It will be interesting to see if Wanderlei responds to Sonnen’s accusations as both the fight gets closer and their rivalry begins to really heat up.