Australian boxer Danny Green has cancelled his upcoming Melbourne fight against German Konni Konrad due to a back injury.

A back injury has forced Australian boxer Danny Green to cancel his upcoming fight against Germany's Konni Konrad.

"Normally I would grit my teeth as I have done my whole career, persevering through preparation with broken noses, broken ribs, broken hands ... but there is simply too much at stake," he said in a statement.

Green was scheduled to fight Konrad, 30, at Melbourne's Hisense Arena on December 2.

The boxer sustained the injury during a sparring session earlier in November.

He doesn't want to get into the ring with Konrad before he is ready and potentially risk a long-awaited rematch with Anthony Mundine.

"It's a risk going into any fight against a world-rated opponent, and I am not going to disrespect this great sport and the public by attempting to fight with a severe and movement-hindering injury," Green said.