"This is true. Harry got the flu and then it developed into pneumonia. So this fight is cancelled,” UFC chief Dana White said in a video posted on Instagram.
It's worth adding that White did not specify whether the promotion would be looking for a new opponent for Luque.
UFC 296 will take place on the night of December 17 at the T-Mobile Arena in Las Vegas. The main event of the event will be the welterweight title fight between Leon Edwards and Colby Covington.