The Blues believed that a clause in the player's contract when he moved on-loan to Turkey guaranteed them £6m should both parties want to make the move long term. But Fenerbahce are now offering barely half that figure.
Uche, a former international team-mate of Yobo's who spent almost a decade at Fenerbahce, said: "Joseph is not having a good holiday as his future remain unresolved.
"He had a wonderful season at Fenerbahçe, the management and fans would love for him to stay at the club and that is key.
"I hope both clubs can just consider the player's desire, ambition and happiness as only a happy man will give his best on the pitch.
"We've heard other clubs are also interested in Yobo, who haven't made official bids yet but the player has repeatedly stated his desire to play on at Fenerbahçe."