Citigroup has reshuffled its European collateralized debt obligation group. Neil Servis, director and head of European structured credit syndicate, has been named co-head of European CDOs alongside his current role. Servis will co-head the business with managing director Tim Beaulac, who has additionally been given a new role as head of new products for global CDOs. Servis and Beaulac confirmed the move, declining further comment.