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St. Louis Blues' Robert Thomas (18) and Colorado Avalanche's Cale Makar (8) chase after a loose puck along the boards during the second period in Game 3 of an NHL hockey Stanley Cup second-round playoff series Saturday, May 21, 2022, in St. Louis. (AP Photo/Jeff Roberson)

Robert Thomas, who busted out with the best season of his young career in 2021-22, will be around for a lot more seasons. Defenseman Nick Leddy, a newcomer to the Blues at the 2022 trade deadline, will be around for another four. Goalie Thomas Greiss and center Noel Acciari will be onboard for at least one each.

And David Perron is a Blue no more.

On Wednesday, the first day of NHL free agency, the Blues announced contract extensions for Thomas and Leddy, signed Greiss (from Detroit) and Acciari (from Florida) as free agents, and saw Perron, a longtime Blues forward and Stanley Cup champion, sign a two-year contract with the Red Wings.

Thomas signed for eight years and $65 million. The 23-year-old center's new contract will begin a year from now, in the 2023-24 season, and continue through 2030-31. By then he'll be on the verge of turning 32.

Leddy signed for four years and $16 million. The deals for Greiss and Acciari are each for one year, $1.25 million.

Thomas, a first-round Blues draft pick in 2017, reached the NHL at age 19 in the 2018-19 season, when he played 70 games and helped St. Louis win its first Stanley Cup in franchise history.

This past season was his fourth in the NHL, and he recorded career highs in goals (20), assists (57, tops on the team), points (77, second on the club) and games (72). He had a 17-game point streak in March and April that tied Edmonton's Connor McDavid for the longest in the league last season. It was the longest points streak in Blues history by a player under age 23 and the longest by any Blues player since Brett Hull set the team record of 25 games in 1991-92.

Leddy, 31, was acquired along with defenseman Luke Witkowski on March 21 from Detroit in a deal for Oskar Sundqvist, Jake Walman and a 2023 second-round draft pick. He played in 20 games for the Blues, providing a much-needed veteran presence while tallying eight points (two goals, six assists). He has played in 851 career NHL games with Minnesota, Chicago, the New York Islanders, Detroit and St. Louis, winning a Stanley Cup with the Blackhawks in 2013.

The deals for Thomas and Leddy left too little money under the salary cap to pay Perron, whose free agent contract with Detroit is worth $9.5 million. It is the first deal that Perron, 34, has signed with a team other than St. Louis. He played 11 seasons for the Blues across three separate stints, but when he played for Edmonton, Pittsburgh, Anaheim and Vegas between those stints, it was on deals he signed with the Blues.

Perron leaves St. Louis after scoring 196 goals, 269 assists and 465 points in 673 regular-season games wearing the Blue Note.

Greiss, 36, will replace Ville Husso, now with Detroit after a draft-day trade, as Jordan Binnington's backup. Greiss spent the last two seasons with the Red Wings, posting an 18-30-9 mark with a .901 save percentage, 3.14 goals-against average and two shutouts in 65 games (57 starts). He has career marks of a .912 save percentage and 2.72 goals-against average in 347 games with Detroit, the Islanders, Pittsburgh, Phoenix (now Arizona) and San Jose.

Acciari, 30, played for the Panthers the last three seasons, totaling 46 points (27 goals, 19 assists) over 127 games. He previously played four seasons with Boston, giving him career totals of 77 points (45 goals, 32 assists) in 307 games. Acciari was on the 2018-19 Bruins team that lost to the Blues in the Stanley Cup Final.

Also on Wednesday, the Blues signed forward Will Bitten to a two-year, two-way contract. Bitten, 24, was obtained from Minnesota in a December 2021 trade for Nolan Stevens. He had 24 points (10 goals, 14 assists) in 45 regular-season games with the Blues' AHL affiliate at Springfield last season, then added a team-high 21 points (eight goals, 13 assists) in 18 games in the AHL playoffs.