André Villas-Boas
Castro returned to Porto for 2010–11, but was soon deemed surplus to requirements by new manager André Villas-Boas as practically all Portuguese players. In January 2011, after having totalled 106 minutes in six competitive matches, he was loaned to Sporting de Gijón in Spain, making his La Liga debut on the 23rd by playing one minute in a 1–0 home victory over Atlético Madrid.