Chelsea are in the hunt for Southampton defender Toby Alderweireld.

The Blues and Alderweireld's parent club, Atletico Madrid, enjoy a good relationship and are expected to do business again this summer.

Chelsea fullback Filipe Luis is being linked with a return to the Vicente Calderon, which has fueled talk of a swap involving Alderweireld.

Saints hold first option on the Belgian, but Atletico can still recall the defender and sell him on by paying a penalty clause.

Tottenham are also interested in the centre-half.