Tony Mokbel, a notorious figure in the world of organized crime, will avoid returning to prison following a re-sentencing for his involvement in trafficking over 41 kilograms of methylamphetamine.

The 60-year-old sought to overturn his 2006 conviction, arguing that the case had been compromised by Nicola Gobbo, a barrister who had also acted as an informer.

However, in October, the Victorian Court of Appeal decided against Mokbel’s appeal regarding the drug trafficking charge, which was part of a police investigation known as Operation Magnum.

Instead, the court upheld his conviction, with Justices Stephen McLeish, Maree Kennedy, and Stephen Kaye re-sentencing him to 13 years, seven months, and 15 days—time that Mokbel has already served.

Mokbel appeared visibly relieved upon hearing the decision that he would not have to return to jail.

The 60-year-old had also appealed another two of his other convictions, dubbed Quills and Orbital.

The court found Gobbo, who was a registered Victoria Police informer, encouraged two of her clients to “roll” against Mokbel and give statements to police.

At the same time, she was representing Mokbel in court or providing him with legal advice.

Police relied on the evidence from one of her clients, known under the pseudonym Mr Bickley, to prosecute the underworld figure on the Quills drug trafficking charge.

The court determined there had been a substantial miscarriage of justice and Mokbel’s conviction in that matter should be quashed.

The Orbital drug importation conviction was also set aside, but the justices determined Mokbel should face a retrial.

The Victorian Director of Public Prosecution is considering whether to retry Mokbel but a decision has not yet been made, a spokeswoman told AAP.