Complex sentence: Candidate engines include variants of Rolls-Royce's Trent 1000 and General Electric's GEnx-1B: both engine makers are reportedly interested in trying to win exclusivity should a re-engined A330 be offered.
Split into simpler sentences: Candidate engines include variants of Rolls-Royce's Trent 1000 and General Electric's GEnx-1B. Both engine makers are reportedly interested in trying to win exclusivity should a re-engined A330 be offered.