Guptill was part of the squad for the T20 World Cup in Australia but did not play during the tournament in which Finn Allen was preferred and was left out entirely for the ongoing series against India.
“It has been a great honor to play for my country, and I am grateful to the Black Caps and everyone within the NZC for their support,” Guptill said. “But, equally, I am realistic enough to understand the need to consider our options under the current circumstances.
“With this release, I’m still available for New Zealand, I have the opportunity to pursue other opportunities, and I get to spend more time with my family – which is important.”
It is understood he could be in the frame for the BBL period as a replacement player with at least two clubs looking for reinforcements ahead of the season.
“We understand Martin’s position,” said NZC chief executive David White. “He’s been a fantastic batsman for us for a long time, and we certainly don’t want to stand in his way as he looks for other opportunities.
“Martin is a giant of the game, a committed and respected member of the Black Caps, and has earned the right to play out his career on his own terms. He leaves his contract with our best wishes.”
Guptill’s move follows that of Bolt who gave up his central contract earlier this year. He was also part of the T20 World Cup squad but was not picked to face India. He has an upcoming contract with Melbourne Stars in the BBL before moving to the ILT20 with MI Emirates.
“Players like Martin, Trent and Colin, with long and successful international track records, inevitably end up with substitute playing options at this stage of their careers, and we respect that,” he said. “It’s just part of the natural ebb and flow of an individual career in a team sport.”
