The striker has continually being linked with a move away from Signal Iduna Park, and his agent has now suggested that he could leave the club at the end of the campaign
The striker has caught the attention of Manchester United and City with his goalscoring performances for the reigning Bundesliga champions, while Bayern Munich and Juventus are also believed to be interested in signing the 24-year-old.
"Robert has made his decision. Only he decides when he will make his decision public, though," Kucharski said in a Polish talkshow.
"Those who have followed Robert's career will realise that he's never stayed at a club for longer than two seasons.
"He's already in his third season at Dortmund. Read between the lines and you'll know what this means..."
The striker has a contract with BVB until the summer of 2014.