Hamburg general manager Frank Arnesen is hopeful young winger Maximilian Beister will commit to the club on a long-term deal.
The 21-year-old has been on loan at Fortuna Dusseldorf since July 2010 and has impressed for the German second-tier side, scoring 15 goals in 45 league appearances.
It is thought his displays have caught the eye of Hamburg's Bundesliga rivals Borussia Dortmund, prompting speculation of a move to the reigning champions.
But Arnesen says Beister, currently contracted at the Imtech Arena until June 2013, while his loan deal expires at the end of the season, has been offered a new long-term deal which the manager expects him to sign in the near future.
He told the club's official website: "We have offered Maximilian Beister a new four-year contract.
"The player and his agent liked the offer. Things look positive but we will only be happy when everything is signed."
Meanwhile, Arnesen expects former Hamburg captain David Jarolim to leave the club during next month's transfer window.
The 32-year-old Czech Republic midfielder is out of contract at the end of the season and, after losing his first-team place, has been linked with Bundesliga sides FC Augsburg and Wolfsburg.
"David Jarolim has said he does not want to be a burden for Hamburg," added Arnesen. "If he is keen to leave the club, we will not block a transfer."
The manager says it is possible Hamburg will dip into the loan market should any existing players leave next month.
He said: "In regard to transfers I'm not ruling anything out. If a player leaves us this winter, we may sign another on loan."