Complex sentence: In early 2013 Ariana Grande was signed to Scooter Braun's management, however in February 2016 she parted ways with Braun, claiming that it had nothing to do with the small conflict between herself and Braun's other client Bieber.
Split into simpler sentences: In early 2013 Ariana Grande was signed to Scooter Braun's management. In February 2016 she parted ways with Braun, claiming that it had nothing to do with the small conflict between herself and Braun's other client Bieber.