Attorneys for the Catholic Archdiocese of Philadelphia say it may assert attorney-client privilege that can’t be waived even if the archdiocese’s former personnel director — who is accused of endangering the welfare of children by not taking sufficient action to protect children from sexually abusive priests — waives his own attorney-client privilege.

Philadelphia prosecutors, however, argued that it is solely up to Monsignor William Lynn, who is preparing to defend against charges of endangering the welfare of children and conspiracy in a trial later this winter, whether he waives his privilege.