Manchester United have reportedly lodged a bid for Wolfsburg defender Ricardo Rodriguez.
The 21-year-old, who is widely regarded as one of the best young left-backs in European football, impressed for Switzerland at this summer's World Cup.
A number of clubs have been credited with an interest in the last couple of weeks, but according to Wolfsburger Allgemeine, United have made a firm offer.
United have already signed Luke Shaw from Southampton this summer, but it is understood that fellow left-back Patrice Evra – despite recently signing a new one-year deal – could depart.