BCCI president Sourav Ganguly on Thursday said that once Virat Kohli refused to continue as India's T20 captain, the selectors made up their mind to hand the ODI reins to Rohit Sharma as the national team couldn't afford "too much leadership" with two separate captains in the limited-overs format.

from Times of India https://timesofindia.indiatimes.com/sports/cricket/india-in-south-africa/we-couldnt-have-had-two-white-ball-captains-sourav-ganguly-on-rohit-sharma-replacing-virat-kohli-as-odi-skipper/articleshow/88189050.cms