An eye injury has forced Michael Bisping out of his return home to England.
Bisping (24-5) was scheduled to meet Mark Munoz (13-3) in the main event of UFC Fight Night 30 in Manchester. But complications from a detached retina suffered earlier in the year will force him out of the Oct. 26 bout.
"We're going to get [Bisping] the best treatment possible," White told ESPN. "Hopefully he'll be able to get through this thing."
Machida (19-4) had been slated to make his middleweight debut against Tim Kennedy in the main event of a Fight for the Troops card on Nov. 6. A replacement opponent for Kennedy has not yet been named.
Update: Bisping's manager informed MMAFighting.com's Ariel Helwani that corrective surgery won't be necessary, but the Brit expects to be sidelined for upwards of five to six months.