The former national sales director of opioid medicine manufacturer Insys Therapeutics, seeking a new trial, has accused his ex-defense lawyers at Weil, Gotshal & Manges of hiding a conflict from him because their firm is also working on Insys’ bankruptcy.

Richard Simon was one of five Insys executives convicted in Boston federal court of racketeering over the company’s payments to doctors, allegedly in exchange for prescribing its super-potent painkiller Subsys to patients who didn’t merit it. He and his co-defendants sought a new trial earlier this year, claiming the evidence against them was weak and misunderstood by jurors.