Broadcasters who have spent billions of dollars to screen Champions League soccer have condemned the plan by top European clubs to form a breakaway Super League as a threat to the future of the game that will not succeed.

News that 12 clubs including Real Madrid, Juventus and Manchester United have joined forces to set up a new competition risks undermining the existing media contracts that help fund the game.

Were the new league to go ahead, media groups that risk watching the value of their existing rights disappear will have to decide whether they want to battle for the new matches, potentially against rivals such as Amazon or Disney's ESPN.