Sami Hyypia says Liverpool defensive partner Dan Agger has no limits.
He told Liverpoolfc.tv: "There are no limits to his potential.
"He's the type of person who wants to learn more everyday, and he listens to any advice people give him.
"I know I'm getting older now and maybe my best days are gone. It's very important younger players are coming through. Daniel has taken his chance, shown great consistency and quality."