Mamadou Sakho limped off early on in Liverpool 's 1-0 FA Cup sixth round replay win over Blackburn Rovers to leave Brendan Rodgers with just two available first-team centre backs . The French defender was limping heavily and clutching his hamstring after a clearance on the edge of his own penalty area before being withdrawn after just 28 minutes at Ewood Park . Sakho was replaced by Kolo Toure , who partnered Dejan Lovren in a threadbare four-man defence with Emre Can and Martin Skrtel already unavailable . Mamadou Sakho limped off early on in Liverpool 's 1-0 FA Cup sixth round replay win over Blackburn Rovers . Frenchman was limping heavily and clutching his hamstring after a clearance on the edge of his penalty area . German midfielder-cum-defender Can was serving a one match ban for a red card against Arsenal on Sunday , while Skrtel still has one game left of his three-game suspension for stamping on Manchester United goalkeeper David de Gea last month . Sakho will undergo scans on Thursday to determine the extent of the injury but he is already a doubt for Liverpool 's Barclays Premier League clash with Newcastle United on Monday . Rodgers , who has tended to select three central defenders before the FA Cup replay , will be hoping the 25-year-old can return to action as soon as possible . Brendan Rodgers who has tended to select three central defenders , will be hoping for a quick recovery . Martin Skrtel ( left ) , pictured on international duty , is still missing with a suspension picked up for a stamp .
Mamadou Sakho limped off in Liverpool 's win over Blackburn Rovers . German defender looked to be suffering with hamstring trouble in first half . Brendan Rodgers forced to use pairing of Dejan Lovren and Kolo Toure .