Complex sentence: He executed a radical overhaul of AIB's branch banking operation in 1992 which entailed new and, in the view of many, unpopular changes to work practice but he also brokered a deal with staff to secure implementation.
Split into simpler sentences: He executed a radical overhaul of AIB's branch banking operation in 1992 which entailed new and, in the view of many, unpopular changes to work practice. He also brokered a deal with staff to secure implementation.