Alex Donnelly was the fixer in a £210,000 consignment of heroin being arranged in October 2011.
The 58-year-old was also caught handing over £23,000 of drug money in a Glasgow street.
He pleaded guilty at the High Court in Glasgow to a charge under the Criminal Justice and Licensing Act of directing serious organised crime.
He was first locked up at the same court in 1996 for heroin dealing then snared again in 2006 and sentenced to 10 years for his role in a cocaine gang.
Lord Boyd told him: "The trafficking of drugs is a vile and evil trade and is one that you have followed for many years."