The new captains will begin their tenures next month in the limited-overs leg of their South Africa tour, which also features two Tests .Kraigg Brathwaite remains captain of the Test side.
The previous record fee paid for Morris was broken once more on Friday, with Mumbai Indians paying Rs 17.5 crore for Australian all-rounder Cameron Green.
The move follows their disappointing Twenty20 World Cup exit in Australia.
The hosts were restricted to 122/8 in response to India's total of 190/6.
Prasidh Krishna (4/12) was the pick of the bowlers as India dismissed West Indies for 193.
Chasing a modest 142 for victory after Moises Henriques (33) and Ashton Turner (24) put on Australia's first half-century stand of the series, West Indies got home in style thanks to Gayle's blitzkrieg that included seven sixes.
The Punjab Kings batsman also urged the Indians to get themselves vaccinated at the earliest.
Pooran was let off with a four-game ban for 'changing the condition of the ball' during the third ODI against Afghanistan.
The incident took place during the West Indies' innings when Saini took the wicket of Pooran.
Pooran, who struck his maiden ODI hundred against Sri Lanka in a losing cause, wants to use his side's forgettable run in the World Cup as a learning experience.