The 32-year-old, who is the club's top scorer with seven goals, was left out of Wigan's game against Bristol Rovers on Tuesday.
The forward is closing in on a move to the Indian Super League to team up with the former Liverpool striker.
Garner is out of contract at the end of the season and has asked to be released early.
He signed a 12-month extension days before Wigan were placed into administration last July.
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