American defender Oguchi Chijioke Onyewu despite being on the score-sheet against Eibar in the Spanish Cup on Tuesday has not totally convinced Malaga gaffer Manuel Pellegrini.<br /><br />Spanish daily Malaga Hoy says the Chilean coach has contacted the Sporting Director of Malaga on the need to sign a new central defender in the January transfer window.<br /><br />Onyewu, who is primarily a player of Sporting Lisbon, is on loan at Malaga until the end of the 2012 - 2013 season.<br /><br />The ex Standard Liege center back has managed only one game in La Liga so far. <br /><br />Photo Credit: Malaga<br />