Former Liverpool boss Roy Evans says Brendan Rodgers needs to think carefully about how he'll replace Jamie Carragher.
Carragher will hang up his boots at the end of the season.
"We'll have to get somebody to replace Jamie Carragher and Brendan did mention in his press conference [after Everton] that he will look hard and long to replace him," Evans told Liverpool's official website.
"But the trick is that you don't replace Jamie with someone like him; you replace him with somebody different, because there isn't another Jamie out there.
"There's somebody different - a different type of centre-back. You have to get one of course. You have to get one that can play with Daniel Agger, Martin Skrtel and the others.
"We've got a couple of young lads who are desperate to get in [to the side] as well. We've got to fill a void in terms of Jamie's personality and his ability."