Manjrekar says Kohli quit before he was pushed out

"When he gets that vibe that his captaincy is under threat, he tends to quit,” Manjrekar said on ESPNCricinfo. 

"He was uncomfortable when Anil Kumble was the coach and once Shastri and the support staff came in, he felt comfortable. The new coach (Rahul Dravid) is no Ravi Shastri. He would have got some inkling of the kind of support he was going to get... Individually, his batting is not at its best. All that has just added up," he said.