A heavily rumored matchup between former UFC heavyweight champ Cain Velasquez (9-1 MMA, 7-0 UFC) and Antonio Silva (16-3 MMA, 0-0 UFC) is not happening, a source today told MMAjunkie.com (www.mmajunkie.com).

The bout was reportedly targeted for April, when the UFC is scheduled to return to Atlanta for UFC 146.

While Silva is still targeted to make his octagon debut on that month, his opponent is undetermined.

"Bigfoot" most recently appeared in Strikeforce, where he was eliminated in the semifinals of the promotion's heavyweight grand prix when Daniel Cormier knocked him out at an event this past June. The loss snapped a three-fight win streak capped off by a stunning upset over Fedor Emelianenko in the tournament's quarterfinals.