Despite rumors to the contrary, Melvin Guillard will not be returning to train at Jackson’s Mixed Martial Arts.The UFC lightweight recently announced via Twitter that he has left the Blackzilians and has rejoined the Albuquerque, N.M.-based team.“I’m no longer a Blackzilian. I went back to where I belong [at] Jackson’s,” Guillard wrote.However, a source close to the situation confirmed to Sherdog.com on Monday that the fighter known as “The Young Assassin” will not be granted access to train with the renowned camp, which he once called home for more than a year and a half. Jackson’s MMA currently houses a bevy of 155-pound talent, from “Fight of the Night” staple Donald Cerrone to up-and-coming Russian prospect Rustam Khabilov . Guillard, meanwhile, has lost four of his last five fights.Guillard arguably achieved his greatest success under the guidance of Greg Jackson and Mike Winkeljohn, winning five consecutive fights in the Octagon after joining the team prior to facing Ronys Torres at UFC 109. During that stint, the Louisiana native earned notable victories over Evan Dunham Jeremy Stephens and Shane Roller However, Guillard began to split time between Jackson’s and the Blackzilians before his matchup with Joe Lauzon at UFC 136.“Until it presents a problem as far as my coaching goes, then I’ll deal with it when it comes,” Guillard told Sherdog.com in 2011. “I’m my own boss; my coaches work for me, so it’s whatever I choose that I want to do to be successful in this game. I’m going to take those options.”Guillard made the transition to the Florida-based camp official following his loss to Lauzon, and he has remained there through his most recent outing, a split-decision defeat to Jamie Varner at UFC 155. Guillard does not currently have a bout scheduled with the Las Vegas-based promotion.