The 26-year-old takes on Sergey Kovalev at the Motorpoint Arena on 17th August and showed off his sparring skills for fans in Queen Street.
More top news
Another bright start for some today, although cloud will build through the morning.
A scientist from Carmarthen has won the world's top prize for animal conservation for his work in saving nine species from extinction.
A man has been arrested on suspicion of murder after a woman's body was found in south Wales.