With opponent Antonio Rogerio Nogueira (21-5 MMA, 4-2 UFC) injured, and short-notice volunteer Chael Sonnen (27-13-1 MMA, 6-6 UFC) no longer available , Mauricio “Shogun” Rua (21-7 MMA, 5-5 UFC) won’t fight at next week’s UFC 161 event. But the ex-light-heavyweight champ told Brazilian website Tatame that UFC officials have given him another date to fight against a yet-to-be confirmed opponent. “UFC asked me to keep training, that I would fight on August 17 [in] Boston,” Rua said, referring to UFC on FOX Sports 1, which takes place at TD Garden and serves as the UFC’s debut show on the new sports channel. Sonnen appears poised to take the rescheduled bout, though MMAjunkie.com (www.mmajunkie.com) was unable to confirm whether he will stand opposite Rua on the summer card. A rep for the three-time title challenger said an announcement on his future should be made tonight.