Borussia Dortmund midfielder Ilkay Gundogan has insisted that he is yet to make a final decision regarding his future at the club.

The 23-year-old, who has been linked with Manchester United and Real Madrid, has 18 months remaining on his contract with the Bundesliga outfit.

"I have not made a final decision yet," Bild quotes him as saying. "BVB are the first team I am talking to, I will soon make a well-thought decision. But I am keeping my options open at this point."

Although Gundogan's future has been the subject of much speculation, he is adamant that Dortmund have not issued him with an ultimatum to force his hand.

"Borussia Dortmund have not set me an ultimatum. I am just trying to get healthy again and get back to my best form. That's the main priority for BVB and for myself," he added.

Dortmund recently confirmed that Gundogan was sent home from the club's training camp in Spain with bronchitis.