Complex sentence: A rematch was expected with Junior dos Santos on September 22,2012 at UFC 152, however, it was later announced by Dana White that the date for the rematch had been set to December 29 at UFC 155.
Split into simpler sentences: A rematch was expected with Junior dos Santos on September 22,2012 at UFC 152. However, it was later announced by Dana White that the date for the rematch had been set to December 29 at UFC 155.