Hischier, the No. 1 pick in the 2017 NHL Draft, centered the top line as a rookie with Taylor Hall. Hall, who is entering his ninth NHL season, said Hischier played a huge part in helping him win the Hart Trophy as NHL most valuable player.
Hischier finished in the top 10 among NHL rookies in goals (20), assists (32), points (52) and shots on goal (180) in 82 games.
"We expect Nico to take another step; we talked to him about improving his shot this summer, getting stronger and improving his conditioning to be a driving force this year," Hynes said. "With the experience he had, and knowing the player he is, I know he's putting in a really good summer."