Welterweight Nate Loughran’s long-awaited octagon return has been put on hold, and UFC officials are now seeking a new opponent for Erick Silva.

MMAjunkie today learned from a source close to the event that Loughran has been forced to withdraw from a scheduled UFC Fight Night 36 appearance. The source spoke on the condition of anonymity because he was not authorized to discuss the change.

Featuring a middleweight main event between Lyoto Machida and Gegard Mousasi, UFC Fight Night 36 takes place Feb. 15 at Arena Jaragua in Jaragua do Sul, Santa Caarina, Brazil. The night’s main card airs on FOX Sports 1, and prelims stream on UFC Fight Pass.

The night’s exact bout order has yet to be revealed.

Loughran had looked to return to the UFC for the first time since asking for his release in 2008. The NorCal Fighting Alliance product opened his professional career with nine straight wins, eight of which came by submission, including a UFC debut win over Johnny Rees. However, he suffered an injury against Tim Credeur in a December 2008 contest and quit on the stool before the start of the third round and later asked for his release from the promotion to focus on life outside of the cage.

While Loughran continued to train during his break from competition, he didn’t enter the cage again until March 2012, when he earned a split-decision win over Jamie Jara on the California regional scene.

Meanwhile, Silva is an explosive 29-year-old Brazilian who looks to rebound from a disappointing (and shocking) knockout loss to Dong Hyun Kim in October. While Silva’s upside is undeniable, he’s struggled to find consistency in the cage against top competition, including the loss to Kim, as well as an October 2012 defeat against Jon Fitch.

The current UFC Fight Night 36 lineup includes:

Lyoto Machida vs. Gegard Mousasi

Francis Carmont vs. Ronaldo Souza

Cristiano Marcello vs. Joe Proctor

Viscardi Andrade vs. Nicholas Musoke

Jesse Ronson vs. Francisco Trinaldo

Andy Ogle vs. Charles Oliveira

Thiago Tavares vs. Zubair Tuhugov

Rodrigo Damm vs. Ivan Jorge

Erick Silva vs. opponent TBA

Yuri Alcantara vs. Wilson Reis

Felipe Arantes vs. Maximo Blanco

For more on UFC Fight Night 36, check out the UFC Rumors section of the site.

(Pictured: Erick Silva)