The 26-year-old Belgium international, who enjoyed a successful loan at Southampton last season, will return to his parent club after duties with his country to discuss his next move.
It is understood Saints have first option to sign the defender but Atletico can alter that arrangement via a small payment and create an open market for the player, who has attracted the interest of a host of Premier League clubs.
After he played 90 minutes in Belgium’s 4-3 friendly win over France on Sunday,??Alderweireld told Sky Sports News HQ : “I will go back to Spain next week and we will talk.
“We will see what happens. I hope a decision will be made quickly, otherwise it will be all summer.
“I don’t know if Chelsea are interested but I have read a little bit in the press. Let’s see what comes up and I will make a decision. We will see what clubs come in.”
Alderweireld, who signed from Ajax in 2013, is believed to have two years left to run on his contract and is not thought to have been offered a new deal by Atletico.
He will feature again for Belgium in their upcoming European Qualifier against Wales on Friday and he said :”We have to be on our best to win that game. We have a good squad and good players and we want to be first in the group.”