And having also made his international breakthrough - with the Serb already bagging his first goal for his country - interest in his services has inevitably intensified, with Chelsea, Manchester City, Everton and Arsenal all reportedly eyeing up the youngster earlier this summer.
Manchester United, AC Milan and Barcelona have since been added to that list following more recent speculation suggesting Subotic will be departing for pastures new during the winter transfer window.
But although the player's representitive, Steve Kelly, admitted that several clubs were monitoring Subotic's progress, he insisted it was unlikely that the stopper would be leaving Dortmund until next summer at the earliest.
“Neven is always going to attract speculation because he is a top class player. I think he would be interested in a top club, but which client? I don't know," he told Sport.co.uk.
"It is doubtful he will move in January, but I am sure there will be a lot of specualtion and rumours.
“There is absolutely nothing concrete at this moment in time, I can confirm that. No representative or club has approached me, and I have no phone calls at all.
"He is one of the top young centre-half's in Europe, and it is no surprise figures of £15 million and £20 million are being talked about. I know England's top clubs are monitoring, as are Italy's top clubs.
“I cannot see him moving before next summer's tournament [World Cup]. But anything can happen in football.”
