Martin Skrtel is convinced about the quality of new Liverpool teammate Dejan Lovren.
Skrtel has expressed his delight at the strength in depth the Reds defence will have this season, with Lovren only adding to the competition for places.
He told liverpoolfc.com: "Dejan Lovren had a great season with Southampton and I am really happy that he is with us.
"We all need competition because that is what keeps you motivated.
"He will make us stronger, so I really welcome his arrival - and it will only make me work harder.
"Liverpool is not only about 11 players. We will have many games this season, so every player will be important."
