A knee injury has forced Rashad Evans to pull out of his UFC 170 co-main event fight against Daniel Cormier, and the fight will be moved to a card later this year. 
The news of the injury was initially reported by Kevin Iole of Yahoo Sports as he spoke to UFC CEO Lorenzo Fertitta about the injury.
According to Fertitta, Evans will need four weeks of rehab and the bout between Evans and Cormier could be rescheduled for UFC 172 in April, or UFC 173 in May.
Following the announcement of the injury to Evans, former two division title contender Chael Sonnen tweeted that he would step in on short notice to face Cormier.
.@dc_mma ya know I haven’t been crazy about you attitude as of late. Daddy ain’t ready, but he’s ready enough. Feb 22 just say my name…
— chael sonnen (@sonnench) February 13, 2014
After Sonnen tweeted that he would be willing to step up, Cormier responded that he just wanted to fight.
I’m so sad, but I wanna fight. I’ve trained so hard. @sonnench, @Anthony_Rumble, anybody Maybe a heavyweight. Anyone please! @danawhite
— Daniel Cormier (@dc_mma) February 13, 2014
As of right now, next week’s UFC 170 card will now go forward with ten fights and the UFC has not announced which fight will be added to the main card.
The current UFC 170: Rousey vs. McMann fight card is below.
Main Card: (PPV – 10 p.m. ET/7 p.m. PT)
Ronda Rousey (8-0) vs. Sara McMann (7-0)
Demian Maia (18-5) vs. Rory MacDonald (15-2)
Mike Pyle (25-9-1) vs. TJ Waldburger (16-8)
Stephen Thompson (8-1) vs. Robert Whittaker (11-3)
Preliminary Card: (Fox Sports 1 – 8 p.m. ET/5 pm. PT)
Alexis Davis (15-5) vs. Jessica Eye (11-1)
Raphael Assuncao (21-4) vs. Pedro Munhoz (10-0)
Aljamain Sterling (8-0) vs. Cody Gibson (11-3)
Zach Makovsky (17-4) vs. Josh Sampo (11-2)
Preliminary Card: (UFC Fight Pass – 7 p.m. ET/4 p.m. PT)
Erik Koch (13-3) vs. Rafaello Oliveira (15-6)
Ernest Chavez (6-0) vs. Yosdenis Cedeno (9-2)