With the expansion of T20 leagues around the world, cricketers are finding it hard to strike the balance between franchise cricket and national duty.

In July this year, England’s ace all-rounder Ben Stokes called time on his ODI career, citing that it was "unsustainable" for him to play all three formats amid a busy schedule.

Last month, New Zealand’s star pacer Trent Boult gave up his central contract to spend more time with his family and feature in domestic leagues around the globe.

See Also: Trent Boult hopes his Test career not over after giving up central contract

Amid the recent development, New Zealand skipper Kane Williamson has expressed his concern over the rapidly changing cricket landscape.

"It's a tricky one because it is changing. So much seems to have happened so quickly," Williamson told reporters.

"It does seem to be a movement in the landscape of the game. Every case is unique and every case has got their individual needs at different stages of their lives.

"There are a lot of different franchise events happening and seeing players make decisions on their playing careers... suggests that there is a balance to strike and some things to work through," he added.

Besides, Kiwi all-rounder Colin de Grandhomme also called time on his international career last week. He has been roped in by BBL franchise Adelaide Strikers in the draft process.

Williamson, who is battling injuries lately, is currently leading the national side in the ongoing three-match ODI series against Australia.

"At the moment I'm very much here and looking to do my very best for the team. I love being involved in this environment," Williamson said.

"It's nice to have those 10 days at home and the body is feeling good. It's nice to be training fully and batting for long periods in the nets," he added.

(With PTI inputs)