CSK CEO reveals Suresh Raina's impending retirement

He leaves as their leading scorer with 4687 runs in 176 games from 2008 to 2021.

 Raina had already said goodbye to the international stage two years prior.

Raina announced his retirement on Twitter.

 I would like to declare that I am leaving all forms of cricket. 

Raina participated in each of the four seasons during which CSK won the IPL.

 He was also Dhoni's loyal subordinate for a long time.