Alderweireld is on loan from Atletico Madrid and has established himself as a key component in the Premier League’s meanest defence.
It looks increasingly like Southampton may be stripped of their best players again this summer, with Morgan Schneiderlin and Nathaniel Clyne both targets for top-four clubs.
“It would be very nice to play again with Jan,” said Alderweireld, who has also been linked with Manchester City and Arsenal.
“But that is very far. The interest has yet to be concrete and finally Atletico must let me go. Maybe they want me back in Madrid. I have to wait for the calls after the season.
“A transfer will be arranged later, not now. Atletico will decide my future, but I would like to stay in the Premier League. That some of the big clubs show interest proves I’m doing well.”