Perfect opportunity for a european breakaway league champions league winner fletcher fires postponement warning

It seems like you're referencing a fictional scenario where a European breakaway league, which is a hypothetical league consisting of top European clubs, has won the Champions League and is now issuing a warning about postponing matches.

Here's a rewritten version of your sentence in a more formal and coherent tone:

"The newly crowned Champions League winners of the European breakaway league, led by Fletcher, have issued a warning to the governing bodies, stating that they will not hesitate to postpone matches if their demands for greater control and financial compensation are not met."

Let me know if you'd like me to rephrase anything else!