Chelsea defender David Luiz is top of Barcelona's wanted list again as they prepare for the summer transfer window. Barca's coach Tata Martino and sporting director Andoni Zubizarreta have drawn up their hit-list of targets and Luiz is on their agenda as they look to bring in a centre-half and a goalkeeper. The Spanish champions were keen on Brazil international Luiz last summer but the Blues' returning manager Jose Mourinho refused to sell and the frizzy-haired fan favourite has played regularly under the Special One this season.