Vitali Klitschko has admitted that it is his dream to fight former WBA world champion David Haye.
The Ukranian will face Derek Chisora for the WBC heavyweight title in Munich on February 18.
However, the 40-year-old has said that he still wants to face Haye, who was beaten by his young brother Wladimir in his last bout before retiring.
Although the world champion wants the fight, he has claimed that Haye and his lawyers are making it difficult to organise.
"I have a dream to fight David Haye," said Klitschko.
"We are miles away from making the contract because it is so difficult to talk to David Haye and his lawyers. He thinks he is world champion.
"I hope it is a fight coming true."
Klitschko is currently the 15th longest-reigning heavyweight champion of all time.