Experienced World Cup winner wants to leave Aston Villa Sánchez errors at Fulham led to Chelsea conceding Chelsea have been offered Emiliano Martínez and are considering making an offer for the goalkeeper. Martínez has told Aston Villa he wants to leave but a move to Juventus collapsed last week after Villa had signed his replacement, Zion Suzuki , from Parma for £30m. Goalkeeper has been a problematic position for Chelsea in recent seasons, with Robert Sánchez mainly the No 1 but prone to mist…