William Barbosa started his career in Brazil but spent most of his career in Italy, playing for Carrarese, L’Aquila, Martina, Verona, Portogruaro, Taranto, Brindisi and Casarano.
He joined Valletta in summer 2011, spending the past two years with the Citizens.
He replaces Wayne Attard who is expected to join the MFA Technical Centre.