Chael Sonnen has always maintained that Wanderlei Silva would find away out of their grudge match. It turns out that the “American Gangster” was right. According to a report from Combate.com , Silva did not show up for a required hearing to receive a license from the Nevada State Athletic Commission for the fight and has been replaced by Vitor Belfort . Silva and Sonnen coached opposite each other on the third season of The Ultimate Fighter Brazil, where they broke out in a well-publicized scuffle on the set during filming ( watch video footage of Silva and Sonnen’s tussle here ). They were originally scheduled to face off at UFC 173. The bout was then moved to The Ultimate Fighter Brazil 3 Finale
Read more here:
Wanderlei Silva Reportedly Out of UFC 175, Chael Sonnen Now Faces Vitor Belfort? – MMA Weekly