PORTLAND, OREGON - JANUARY 26: Dorian Finney-Smith #10 of the Dallas Mavericks look on against the Portland Trail Blazers during the second half at Moda Center on January 26, 2022 in Portland, Oregon. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and/or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Steph Chambers/Getty Images)Steph Chambers/Getty Images

The Dallas Mavericks and forward Dorian Finney-Smith have agreed on a four-year, $55.5 million contract extension, his agents Michael Tellem and Jeff Schwartz told ESPN's Adrian Wojnarowki.

Finney-Smith, 28, is a key role player for the Mavericks, averaging 10.1 points, 4.8 rebounds and 1.2 steals per game while shooting 43.5 percent from the field and 36.3 percent from three. 

Keith Smith @KeithSmithNBA

This is what I call the "Dinwiddie" extension. The maximum amount Dallas could extend DFS for. Good deal for him and for the Mavs to get a key starter locked up long-term before free agency. <a href="">

Tim MacMahon @espn_macmahon

Dorian Finney-Smith’s new deal will be four years in $55 million range, the most the Mavs could give him on an extension. Dallas did not want to risk losing a valuable role player and great locker room guy in free agency. <a href="">

Finney-Smith's extension doesn't come as much of a surprise. Mavericks governor Mark Cuban told Dalton Trigg of Dallas Basketball on Feb. 1 that the team "will do all we can to keep (both Jalen Brunson) and Dorian (Finney-Smith)."

Brunson remains eligible to be a free agent in the offseason, though ESPN's Tim MacMahon reported the Mavericks "remain optimistic" they can re-sign the guard despite the Detroit Pistons being "known to have serious interest and significant cap space."

It was a big day for the Mavericks, who also traded Kristaps Porzingis and a second-round pick to the Washington Wizards for Spencer Dinwiddie and Davis Bertans, per ESPN's Adrian Wojnarowski and MacMahon.

Marc Stein @TheSteinLine

The Mavericks took back two contracts FAR from team-friendly to make the deal happen but add an additional ballhandler as they've been searching for in Dinwiddie and now must get Bertans back to something resembling the feared shooter who earned a massive deal from Washington. <a href="">

tim cato @tim_cato

cuban’s been interested in bringing dinwiddie to the mavericks since last summer. that said, it was only very recently i got a sense kristaps might actually be available. this sure as hell is a significant shakeup to the team’s roster.

For Dallas, the end goal remains building a contender around superstar Luka Doncic. In the short term, players like Finney-Smith, Brunson, Dinwiddie, Bertans, Tim Hardaway Jr. and Dwight Powell should provide a solid foundation around Doncic for the 32-23 Mavericks, who are fifth in the Western Conference. 

In the long term, having a number of contracts in the $10 million- to $20 million-per-year range will give the Mavericks flexibility in trades in their quest to pair Doncic with a second star.