Buffalo Sabres center Sam Reinhart, No. 4 on the NHL.com Top 60 prospect ranking, will remain with the Sabres for their season opener Thursday against the Columbus Blue Jackets at First Niagara Center.
Sabres coach Ted Nolan made the announcement after practice Monday.
"I can't predict how long [Reinhart] will be with us, but in training camp you just want to make sure you're doing the right thing with young players for their development," Nolan said. "We're also evaluating Nikita [Zadorov]. He's physically big enough and needs to work on parts of his game; we'll evaluate that decision."
Reinhart was chosen No. 2 by the Sabres in the 2014 NHL Draft.