V13911 Authentic Adidas Code (see photos). This Chelsea FC Adidas Football Club Black Blue Away Shirt from the 2011-2012 season is a size L large shirt suitable for adults. Away shirt as worn in the season when Roberto Di Matteo, appointed as caretaker manager after the sacking of Andre Villas-Boas, managed to inspire the side to an unlikely FA Cup and Champions League double, sealed in dramatic style with a penalty shoot-out victory over Bayern Munich.