[football] direct news understands that Barcelona are ready to sign Paris Saint Germain defender Marquinhos. The Brazilian defender has suffered two setbacks in the space of a fortnight at Paris Saint Germain with the arrival of David Luiz and his omission from the Brazil World Cup squad. And, it is understood that those two factors have seen him become unhappy with his position at both club and country, prompting his comments to La Parisien about reported interest from Barcelona. The Catalan side are extremely short in the central defence area after Carles Puyol announced his retirement from the game, whilst the future of Javier Mascherano is up for discussion. And, it is now understood that Barca are ready to seal a deal for the 20-year-old with talks set to begin when the defender has finished representing his country at the Toulon U20 tournament in France. Barca are said to be willing to pay around 30m for the centre-back.