Former Bulgarian international Berbatov, 36, will pair up with his former United teammate Wes Brown in the team co-owned by cricket legend Sachin Tendulkar.
Announcing the arrival of Berbatov, Blasters tweeted from their official handle, "Golden touch,turns like a dream & a deadly finish. The Bulgarian Hitman is set to take ISL by storm".
The 36-year old will join the Kerala side on a one year contract after becoming a free agent since leaving the Greek side PAOK Salonika a year ago.
He had joined United from Tottenham for a then club- record fee of 30 million pounds (USD 39 million) and won two Premier League titles with the English side.
Another Old Trafford veteran, former assistant coach Rene Meulensteen, is Kerala's new boss.
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