"Helping push the team forward across the formats is something I'm very passionate about and something I want to keep contributing towards," Williamson said in a New Zealand Cricket (NZC) release. "However, pursuing an overseas opportunity during the New Zealand summer means I'm unable to accept a central contract offer."

Despite forgoing a central contract, Williamson reiterated his commitment to New Zealand and remained open about accepting a contract in the future.

"Playing for New Zealand is something I treasure, and my desire to give back to the team remains undiminished," he said. "My life outside cricket has changed, however. Spending more time with my family and enjoying experiences with them at home or abroad is something that's even more important to me."

Williamson, who played his 100th Test earlier this year, also has 165 ODI caps and 93 T20I caps. He led New Zealand in 40 Tests, 91 ODIs and 75 T20Is - a stellar recorded decorated by their finals' appearances in the World Test Championship 2021 (that they won), the ODI World Cup 2019 (which they lost via a Super Over) and T20 World Cup 2021 (lost to Australia).

Scott Weenink, the NZC CEO, said that New Zealand's "greatest ever batter" has earned the right to pursue other goals, including family-oriented ones.

"This is a good way to help keep Kane in the international game so that he continues to play a major role for the Blackcaps - both now and in the years to come," he said. "We have very little international cricket in New Zealand through January and outside that period he's still available for the Blackcaps. NZC has a strong preference to select centrally contracted players for the Blackcaps.

"However, we're happy to make an exception for our greatest ever batter - especially as he remains so committed to the team. I know it sounds a bit counterintuitive, but I'm very encouraged by this development."

Fast bowler Lockie Ferguson, 33, who has played a Test, 65 ODIs and 42 T20Is, has also indicated that he won't be accepting a central contract offer. He signed off from the T20 World Cup with figures of 4-4-0-3 against PNG, becoming only the second bowler - and the first in T20 World Cups - to bowl four maidens in a men's T20I.