The 21-year-old is being linked with a move to Premier League side Arsenal.
“We have to deal with all rumours regarding Mesut’s future,” Werder’s general manager Klaus Allofs told Bild.
“I am not annoyed by them, we keep being relaxed on it. I just hope Mesut and his agent keep cool, too.
“It would definitely be better, in fact, if his contract would be a longer one.
“But up to now there are no further talks and also no agreement when to pick up contract talks between the club and Mesut Ozil.”