Acad&eacute;mica midfielder John Ugochukwu Ogu had to be replaced just before half time in Sunday's League Cup game against Olhanense.<br /><br />The 24 - year - old suffered an injury and is expected to see doctors in the coming days to know the extent of injury and possibly his stint on the sidelines.<br /><br />John Ogu told<b> allnigeriasoccer.com</b>: ''I did not participate in training on Monday because I pulled my hamstring in our game on Sunday. Well, for now, I haven't done a check up to know how long I am staying out. Today is a free day so I will see the doctors on Wednesday.''<br /><br />After failing to win their last seven games in the Primeira Liga, Acad&eacute;mica desperately need points in the upcoming matches to get their season back on track.<br /><br />''We have to win our next games to remedy the situation. We drew so many games in the first half of the season. Teams ahead of us got 1 or 2 points. 2013 will be a great year for us because we have so many players coming back from injury,'' says Ogu.<br /><br />Ogu has played 10 games for 15th on the table Acad&eacute;mica in the Portuguese championship.<br />