UFC boss Dana White has confirmed the Principality Stadium could host the UK's biggest ever Mixed Martial Arts event early next year.
The headline fight would be Brit Leon Edwards' trilogy decider against UFC legend Kamaru Usman and it would be the first ever UFC event held in Wales.
White made it clear that if the fight is held in a stadium in the UK, it has to have a roof. It comes amid rumours in the sport Cardiff is in line to host a big event.