He was not keen on getting the coaching role of any other team but India was his only go.
The CAC wrote 'Hassen' in the official letter.
Hesson took to Twitter to congratulate Shastri and wished him best for the future.
Shastri will now continue at the helm until the T20 World Cup 2021.
Over 2,000 applications were received for various positions.
The franchise is set to revamp the coaching staff.
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"I thoroughly enjoyed my time with the Kings XI franchise and wish to thank them for the season I had in charge," Hesson said.
Hesson served as the New Zealand head coach from 2012 to 2018.
He also felt that the wickets with the new ball will be key for New Zealand.