"It's tough to say," Aho said. "I'm sure they're working on it and we'll see what happens."
Aho, a second-round pick (No. 35) in the 2015 NHL Draft, led Carolina with 29 goals and 65 points last season and was second with 36 assists (behind forward Teuvo Teravainen, 41) in 78 games. Aho's totals were up from 24 goals, 25 assists and 49 points as a rookie in 2016-17.
"He's proven he's a good player," Waddell said. "We don't know what the ceiling is yet for him, but you get to know him as a player and a person and he's the kind of guy you continue to build players and pieces around."