The 30-year-old from Ontario played the final season of a seven-year, $45.5 million contract ($6.5 million average annual value) he signed Sept. 13, 2013.
General manager Doug Armstrong said Wednesday he wants to keep Pietrangelo in St. Louis, but doing so would require other moves to fit his new contract under the NHL salary cap.
"I think the first phase is going to be to find out if we can find common ground with Alex, and if we do then go to work to move other pieces," Armstrong said. "It is really an either-or that if we can't find common ground with Alex, then there's really no need to do anything. And if we can find common ground with Alex, then there's a need to do a lot.
"I've said this really since July of '19, Alex is our captain. I've grown up with Alex in this organization and he's grown up with me in this organization. I'd like to see that continue for a number of years moving forward and that's my focus right now."
The defending Stanley Cup champions entered the Stanley Cup Playoffs as the No. 4 seed in the West after going 0-2-1 in the round-robin portion of the Stanley Cup Qualifiers. They were eliminated in six games by the No. 5 seed Vancouver Canucks in the Western Conference First Round. The lasting image of the elimination game was Blues forward David Perron putting his arm around Pietrangelo when they skated off the ice.
"I remember the moment," Pietrangelo said. "I guess when the game's over and I'm thinking the situation that I'm in, I know David and I are really close friends. I appreciated it. I think he understood what I was thinking at the time. I don't know, it might be the last time I wear the [Blues] jersey and last time I play with him too."
Pietrangelo, who has 450 points (109 goals, 341 assists) in 758 regular-season games and 51 points (eight goals, 43 assists) in 92 postseason games, scored an NHL career-high 16 goals this season and tied Roman Josi of the Nashville Predators for second among defensemen, behind Zach Werenski of the Columbus Blue Jackets (20). Pietrangelo's 52 points were sixth among defensemen.
"[Pietrangelo is] our leader, probably our best player most nights with [center Ryan] O'Reilly," Perron said. "The way he played this year with this whole situation was extremely impressive. We play our whole careers to win the Cup. I think he wants to feel like he's respected. He wants to feel like he gets his share of things. I think he deserves it too."