The Champions League holders have not thrown in the towel just yet and will reportedly make an effort to sign the 27-year-old central defender in the next summer transfer windowBarcelona have not given up on the pursuit of AC Milan defender Thiago Silva, Mundo Deportivo suggests.The Brazil centre-back was strongly linked with a move to the Camp Nou in the summer after enjoying an impressive first two seasons at the San Siro outfit.Thiago Silva went as far as to claim he had been approached by Barcelona, only to retract his comments later that week.Following the acquisitions of Cesc Fabregas and Alexis Sanchez, the Catalan club were left with no money to bolster their defence, an area which has shown some problems in the current campaign.And with Carles Puyol turning 34 in April, and Eric Abidal yet to commit his future to the club amid speculation Paris Saint-Germain are interested in his services, the arrival of a new defender is reportedly coach Pep Guardiola\'s priority for 2012-13.Thiago Silva, whose contract with AC Milan runs until the summer of 2016, joined the Serie A champions from Fluminense in a deal worth €10 million in 2009.