Complex sentence: The former Field Road and Cavendish Road site was both auctioned off in 2013 to make way for a new campus, serving Derby College students in Ilkeston by September 2014.
Split into simpler sentences: The former Field Road and Cavendish Road campuses was both auctioned off in 2013 to make way for a new campus. Which would serve Derby College students in Ilkeston by September 2014.