This means, even though Masson had been less active between 2021 and 2024 compared to the beginning of his career, it is expected he will have a busy 2025.
His first opponent of the year, Nnamdi, has a decent record of 11 wins and four losses — with 10 of his wins coming by way of knockout.
However, only four of his wins were against people with positive records, one of them being a rematch.
Nnamdi’s biggest win was against Nigerian cruiserweight champion Chidi Enoma (33 - 6 - 2) who held the title for 10 years, however, at age 50, Enoma is past his prime and was coming off a three-loss streak.
Nnamdi has yet to win a professional boxing title.
The Masson v Nnamdi fight will be held as part of the No Limit Boxing show, on the Liam Wilson v Youssef Dib undercard.
No Limit Boxing, run by Matt and George Rose, also promotes other top boxers from New Zealand and Australia, including former IBO World champion Mea Motu and world title contenders Andrei Mikhailovich and Jerome Pampellone.