Benning said he'd like the Canucks to get younger but feels they will need some veteran presences to lead the way.
"As we're transitioning these young players into our lineup, I feel that if we have solid goaltending on a night-to-night basis, we can be competitive," he said.
Miller split time with Jacob Markstrom this season. Markstrom, who was 10-11-3 with a 2.63 GAA and .910 save percentage in 26 games, signed a three-year, $11 million contract extension with the Canucks last season that runs through 2019-20, according to CapFriendly.com.
"There's no worse feeling than trying to develop young players and get them up and going when you know you don't have a chance to win," Benning said. "Ryan and Jacob have a healthy relationship because they're competitive and respect each other."
Miller is 358-262-74 with 39 shutouts in 709 games (701 starts) with the Buffalo Sabres, St. Louis Blues and Canucks. He ranks 19th on the NHL all-time list for wins and is fourth in wins among active players, behind Roberto Luongo of the Florida Panthers (453 wins), Henrik Lundqvist of the New York Rangers (405) and Marc-Andre Fleury of the Pittsburgh Penguins (375).