Nike are none too happy with Cristiano Ronaldo putting out his own line of footwear

Cristiano Ronaldo has found himself in the bad books of one of his biggest sponsors.

The Real Madrid superstar has irked Nike by releasing a line of shoes under his own brand, CR7. According to Spanish football website, Sport, the sports apparel giant has given the Portugal captain an ultimatum - "Drop the footwear range or lose your contract with Nike." As much clout as Ronaldo has, we don't think he will continue this game of chicken due to the fact that he's currently raking in €9 million a year from Nike. [caption id="attachment_15083" align="alignnone" width="444"] Image via CR7Footwear.com[/caption] Apparently the American company were able to tolerate the fact that the 30-year-old was marketing his underwear and shirts under his brand but the footwear range, which includes boots, loafers and dress shoes, was a bridge too far. H/t to 101GreatGoals