Daniel Vettori's knee injury may take two weeks to heal and New Zealand are likely to replace him with Luke Woodcock or Hamish Bennett in Sunday's World Cup match against Canada, stand-in captain Ross Taylor said.
Leading the team in Vettori's absence, Taylor said efforts were focussed on getting the left-arm spinner back for the March 18 Group A match against Sri Lanka but the injury may take longer to heal.
"Dan's injury may stay the same for another couple of weeks, we are not sure," Taylor told reporters on Saturday.
"We still have not finalised the side but Luke Woodcock or Hamish Bennett are probably the two favourites to replace Dan. But we have to see what the wicket is like tomorrow and choose our team accordingly."
Woodcock, who turns 29 on March 19, is a left-arm spinner while Bennett is a 24-year-old right-arm pace bowler.
Vettori hurt his knee in Kandy on Tuesday while trying to take a catch and missed the remainder of the match against Pakistan which New Zealand, powered by Taylor's swashbuckling unbeaten 131, won by 110 runs.
Taylor said he was aware of his duties as the leader of the team but was happy to take Vettori's advice.
"It's still Dan's team ... Obviously we consult Dan and what he would like but once we come to the park, it's my responsibility," he said.
"I've enjoyed captaincy ... Tomorrow is just another game. It's always nice to captain your country in the World Cup but the main thing is to win the match.
"One of the best strengths of Dan is that he leads from the front with both the bat and the ball and in the field too. I would like to learn from him."
The match against Canada is being played at the Wankhede Stadium, the first game at the venue for the April 2 final.