The Germany striker's former club are keen to end his Bayern Munich nightmare by bringing him back to the Mungersdorfer Stadion.

But a host of other clubs have also expressed their interest in the forward, who is unhappy with his lack of first-team opportunities at the German champions.

Cologne only won promotion back to the Bundesliga last season and it is doubtful they would be able to last the distance in a bidding war for Podolski, but Daum claimed the club would not abandon their interest in the striker.

He told the Kolner Express: "Even if it may sound unrealistic, we are not allowed to give up on it. We have to keep on it without kicking up too much of a fuss.

"We need signings in defence, midfield and in attack - we need strengthening in each."