Bruno Mugooda adds that the midfielder, who joined Bunamwaya four years ago after a spell with Jogoo Young, sealed one year deal with Mutibwa worth sh22m.
He quit Bunamwaya after failing to reach an agreement with clubâ€™s administrators on financial terms.
Zirintuusa help Bunamwaya win the league crown for the first time.
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Zirintuusa joins Tanzania Mtibwa Sugar