Jurgen Klopp wants to keep his "proper" Liverpool defence in tact over the last few games of the season.
The Reds have conceded just 19 goals in 32 league games this season.
And with exception of Dejan Lovren, all of Klopp's primary defenders are 27 or younger.
"They have a long career ahead, which is cool," Klopp said ahead of Friday's trip to Southampton.
"And how it looks at the moment is that they want to spend the majority of their careers here, which is cool as well.
"It is probably not the most expensive defence in the world but it is a proper one, a really proper one," he said.
"Wherever good players are coming from, wherever they are raised, wherever the dream started, they are welcome here at Liverpool."