A rematch could be on the cards between Anthony Joshua and Wladimir Klitschko.
The heavyweight bout may take place at Cardiff's Principality Stadium in October.
Joshua beat Klitschko at Wembley last month to add the WBA world heavyweight title to his IBF crown.
It was the Briton’s 19th straight win at professional level, with 100 per cent of the bouts ending by KO.
Joshua’s promoter, Eddie Hearn, has said: "Talks are on-going over venues."
Staging an outdoor boxing match in autumn would usually prove tricky but the retractable roof at the Principality Stadium would allay concerns.