Mignolet, 26, arrived at Anfield from Sunderland last summer after impressing at the Stadium of Light, as Brendan Rodgers moved to make the Belgian international his first choice goalkeeper, allowing long-serving Pepe Reina to leave the club for Napoli in the process.
But whilst he has had some promising displays, many fans have questioned whether Mignolet is really an upgrade on Reina, after watching the former Sint-Truiden struggle to command his area on a number of occasions in recent weeks - particularly at West Ham United recently, where his error leading to Guy Demel's goal could've cost Liverpool a key two points.
Liverpool goalkeepung legend Bruce Grobbelaar, who made over 600 appearances for the club during a 14 year stay with the club, has concurred with those notions, suggesting Mignolet's poor performances could be a concern as Liverpool chase the Premier League title.
"Mignolet is a good shot-stopper, but by no means the best all-round keeper," said Grobbelaar. "A good keeper should be easy on his feet, plays out from the back and commands himself in the penalty box. A keeper should never be beaten – as he has been – by a header from three yards out. The keeper coach has to work him harder and he can improve a lot, of course he can."
"Another point is his positioning on free-kicks. His starting position is not right. The team and the defence is too far back for the keeper. They’re on top of him. He’s not commanding enough. Another reason I look at Mignolet is the number of goals he’s conceded. Any team which concedes that number of goals should not be top of the league."
"You compare that to the number of goals Petr Cech has conceded at Chelsea and that tells you the difference. Any good team starts from the back," he concluded, after watching Rodgers' side concede the most goals of any side in the top five of the Premier League.