MMAMania.com has the news on this bout:
Exciting light heavyweights Brandon Vera and Jon Jones are in talks to collide at UFC Fight Night 21 in Denver, Colo., on March 21, 2010, according to a late night “Tweet” from the “Truth.”
Vera was supposed to challenge Antonio Rogerio Nogueira at UFC 109; however, the Brazilian apparently fractured his ankle and was forced to pull out of the event.
As of right now the promotion has yet to make an official announcement.
The twitter tweet stated:
just found out I'm firing Jon Bones Jones on March 21st in Denver Colorado. hope u heard it here first!!!!