Willkie Farr & Gallagher has been left with one only full-time partner at its Rome arm after M&A partner Filippo Mazza quit for US rival McDermott Will & Emery.

Mazza, who has advised clients including Fortis, EDF and Munich Re, moves to McDermott’s eight-lawyer Rome branch alongside Willkie Farr associate Carsten Steinhauer, who also joins as a partner.