John Tavares, C, New York Islanders
John Carlson, D, Washington Capitals
James Van Riemsdyk, LW, Toronto Maple Leafs
James Neal, RW, Vegas Golden Knights
Evander Kane, LW, San Jose Sharks
Joe Thornton, C, San Jose Sharks
David Perron, LW, Vegas Golden Knights
Patrick Maroon, LW, New Jersey Devils
Paul Stastny, C, Winnipeg Jets
Michael Grabner, RW, New Jersey Devils
Those are just a few of the prominent free agents available this summer, although that could change if they sign with their current clubs before July 1.
Armstrong reminded everyone in last week's press conference that the Blues ownership group is willing to spend to the salary cap to win, so it's possible the club will be looking into the free agent market this season.
"We can look outside of this group to see if we can get better," Armstrong said. "Free agency is an avenue, but the reality is, we're one of 31 (teams), and probably one of eight or nine with decent cap space that has an ownership group willing to spend it. Our ownership group for seven years has allowed us to spend to the cap… Commitment from ownership, commitment to compete against the New York Rangers, Detroit Red Wings, Toronto Maple Leafs, we spend the same money they spend. I'm excited about working for an ownership group that won't allow us to use market size as a reason why we don't compete."
Armstrong said the salary cap could rise as much as $4 million next season.
"I think we have enough cap space," he said. "We've created some space, I think we could be active in the (free agent) market or active in trades for any player under contract in the NHL."