Porto management are disappointed to lose Oliver Torres at the end of the season.
Torres has impressed on-loan with Porto this term.
AS says he has been the principal player of a team that has reached the last eight of the Champions League. Porto are also locked in a battle with Benfica over the destiny of their domestic league title.
Officials at the club had intended, in brief, to contact Atlético to try to negotiate an extension of his loan stay, but it will not be possible.