Former Logan Islamic bookstore owner Omar Succarieh will be handed a sentencing date on Friday, after being found guilty of acting as a standover man.
In March he was found guilty of threatening to break the legs of a middle-aged Brisbane café owner over a perceived $50,000 debt.
He was found guilty of collecting $10,000 from a man following a business dispute between two fruit shops in March 2014.
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Shop owner Vasilios Pippos told police he was being extorted and Succarieh was charged with extortion and faced a brief judge-alone trial at the Brisbane District Court in March.
He was in custody throughout the short trial, having been sentenced to a minimum three years in prison after last year pleading guilty to four foreign incursion offences.
He was jailed for sending money to foreign fighters in Syria.