Daniel Geale knows what it will take for him to beat Felix Sturm in their middleweight unification fight in Germany on Saturday night.

"I have to go out there and win. I have to make sure I do it convincingly, especially if it goes down to a decision," Geale said on Wednesday.

"We know he's going to be tough, but we are covering all the bases. It's coming at a good time. Felix hasn't performed well recently and I feel I am improving with each fight."

Geale, a 31-year-old Australian, is back in Germany to put his IBF title on the line against 33-year-old Sturm, the WBA super-middleweight champion in Oberhausen.

Having defeated another German, Sebastian Sylvester, in May last year to win the belt, Tasmania-born Geale says he expects no home-fighter bias for Sturm from the judges, two Americans and a South African.

Sturm has been the WBA middleweight champion since 2007, but after Arthur Abraham took the WBO super-middleweight title last Saturday by beating Robert Stieglitz, a war of words erupted.

Another possible all-German bout is being touted in the news media and Sturm's focus seems to have been pulled away from Geale by statements from Abraham’s camp.

"I would be ready to fight Abraham, but he actually has no right to be at the top level," Sturm said after Abraham's management, Sauerland, claimed Sturm had twice turned them down.

"They just want to make fun of me. They want to use my name to advertise Arthur. That is just a joke from Sauerland. They also know that I am the stronger boxer," Sturm said.

He insists he is ready to defeat Geale and fulfil his dream of unifying the titles. "I will fulfil my dream. I am very, very sure, that I am going to beat him."

Sturm has spent his final preparations without his coach, Fritz Sdunek, who is training heavyweight champion Vitali Klitschko for his fight against Manuel Charr in Moscow on September 8.

"Vitali is a priority, because it could be his last fight, but Felix knows exactly what he has to do", Sdunek said recently.