The Brewers are expected to focus on domestic assignments as they hope to seal the league title next month.
Kenya will not have a representative in the upcoming Cecafa Kagame Cup scheduled to take place next month in Tanzania after the withdrawal of Tusker.
The Brewers were the only team forwarded by the Football Kenya Federation as the country's representative in the inter-club regional competition.
The choice to pick Tusker pitted the federation against Gor Mahia, who had expressed an interest in participating in the August 1-14 tournament as the defending Premier League champions.