Kevin Kuranyi's agent says three concrete offers have been made to take the striker on a free transfer from current side Schalke this summer.
The Germany international is a free agent in the summer and Serie A's Juventus, Turkey's Fenerbahce and Dinamo Moscow of Russia are thought to have made offers.
Sunderland are among English Premier League sides to have also been linked with the Brazil-born German, whose agent Roger Wittmann believes he should not extend his stay with the Gelsenkirchen outfit.
Wittmann told Reviersport newspaper: "If I was in his shoes, I would not be signing on with Schalke 04.
"He has received three concrete offers from good clubs around Europe. He is in the position to sign with any of these clubs almost overnight.
"He is 28 years of age and he is the father of a family, it's obvious Kevin is sorting out his future carefully to know what ends up best for him."
Kuranyi moved from Stuttgart to Schalke in June 2005 and has netted 18 goals in 29 Bundesliga matches for the club this season.
Current boss Felix Magath has already admitted that the clubs interested in signing the striker are likely to be able to make more attractive offers than Schalke.