The lineup for next month’s UFC Fight Night 60 event has taken a blow with Tarec Saffiedine (15-4 MMA, 1-1 UFC) suffering an injury and being forced out of a planned headliner with welterweight contender Matt Brown (19-12 MMA, 12-6 UFC).

Sources close to the event told MMAjunkie that Saffiedine, a former Strikeforce champion, has suffered a groin injury and been forced off the card. The sources spoke on the condition of anonymity since the UFC hasn’t yet made a formal announcement.

A replacement search is underway.

UFC Fight Night 60 takes place Valentine’s Day, Feb. 14, at 1STBank Center in Broomfield, Colo. The main card is expected to air on FOX Sports 1.

The would-be headliner had the potential for fireworks with two of the division’s standouts; Brown is ranked No. 6 in the USA TODAY Sports/MMAjunkie MMA welterweight rankings. Saffiedine is an honorable mention and just outside the top 15.

If a suitable replacement is found, Brown looks to rebound from a July “Fight of the Night” loss to now-champ Robbie Lawler, which served as UFC on FOX 12’s headliner and a title eliminator. Prior to the decision defeat, Brown had posted a seven-fight winning streak (with six knockouts) that had him within grasp of a title shot.

Saffiedine, meanwhile, had won five straight bouts, which included a UFC-debut victory over Hyun Gyu Lim (which netted “Fight of the Night” honors), before a TKO defeat to Rory MacDonald in October.

The latest UFC Fight Night 60 card now includes:

Matt Brown vs. TBA Max Holloway vs. Cole Miller Brandon Thatch vs. Stephen Thompson Kiichi Kunimoto vs. Neil Magny Daniel Kelly vs. Patrick Walsh Michel Prazeres vs. Kevin Lee Nik Lentz vs. Thiago Tavares Efrain Escudero vs. Rodrigo de Lima Ray Borg vs. Chris Kelades Tim Elliott vs. Zach Makovsky Jake Lindsey vs. James Moontasri

For more on UFC Fight Night 60, check out the UFC Rumors section of the site.