Real Madrid have agreed to sign River Plate's young forward Franco Mastantuono for an initial fee of about $45 million, a spokesman for the Argentine club told Reuters on Thursday.

Real Madrid are close to completing the signing of River Plate star Franco Mastantuono, sources have told ESPN, with the playmaker expected to arrive in August, after playing for River at the Club World Cup.

A summer of change is well underway at Real Madrid. Carlo Ancelotti has been replaced as coach by Xabi Alonso, defenders Dean Huijsen and Trent Alexander-Arnold have joined and Madrid are working on a possible deal for Benfica left-back Alvaro Carreras.