Two former Dewey & LeBoeuf executives facing retrial are urging a Manhattan judge for permission to cross-examine the lead witness for the prosecution about a new cooperation agreement, calling the deal “extraordinary circumstances” that directly bear on the defendants’ rights.

Defense counsel for former Dewey chief financial officer Joel Sanders and former executive director Stephen DiCarmine said they want a ruling before jury selection of retrial, slated Jan. 23, of whether they can cross-examine cooperating witness Francis Canellas about an amended plea agreement.