One - cap Nigeria international John Ugochukwu Ogu has not been selected by Pedro Emmanuel, manager of Acad&eacute;mica, in his 18 - man squad for the trip to Gil Vicente , which corresponds to the 25th round of matches in the Portuguese championship.<br /><br />The 24 - year - old central midfielder misses Sunday's game due to a sprained left knee.&nbsp; <br /><br />At the moment, his duration on the sidelines is unknown until further tests.<br /><br />John Ogu has made 18 appearances for Acad&eacute;mica in the Primeira Liga , with his last start coming against Estoril on March 17.<br /><br />He is one of the 30 players named by coach Stephen Keshi to prosecute the Super Eagles summer fixtures. <br />