A statement from the club’s official Facebook read:
"Management will like to thank First Team coach John Killa for his services to the Academy.
"Killa moves on after SIX years where he served with his heart and soul.
"He put together a young team which qualified to the Premier League in 2014.
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"His works and dignity will forever remain with us and he has become a member of the the #wafasc family.
"We wish him success in his endeavours."
The Dutch tactician is expected to take over the coaching job of Indian side Bengaluru FC in the coming days.
Kila in his six years stint at the club qualified the Sogakope based side [formerly Feyernood] to the Ghana Premier League in the 2014/15 season.