The Charbonneau commission could soon hear from a couple of very big names.

Reports say former mayor Gerald Tremblay and his ex-right hand man Frank Zampino will take the stand.

Zampino was described during testimony at the inquiry as the most powerful man in Montreal when he was head of the city's executive committee.

He stepped down in 2008.

Tremblay quit last November amid allegations of illegal party financing.

Tremblay stresses he's done nothing wrong and that he knew nothing about alleged illegal activities.

Zampino appeared in court this week on charges, including fraud and conspiracy in the wake of the Faubourg Contrecoeur construction project.

Photo credit: Canadian Press/Ryan Remiorz