Sources: Mavs reach deals with Porzingis, Powell

Barnes thinks Porzingis will do well with Mavs (1:09)

Matt Barnes says Kristaps Porzingis will play well with Luka Doncic and the Mavericks despite his injury because "medicine has come so far." (1:09)

The Dallas Mavericks have agreed on a five-year, $158 million deal with power forward Kristaps Porzingis and a three-year, $33 million extension with center Dwight Powell, sources told ESPN's Tim MacMahon.

Porzingis, a restricted free agent, was expected to re-sign with the Mavericks, who had acquired him in a January blockbuster with the Knicks amid his recovery from a torn ACL in his left knee.

The No. 4 overall pick in the 2015 NBA draft, Porzingis was averaging a career-best 22.7 points per game before his knee injury -- which he suffered while landing on Giannis Antetokounmpo's foot after converting a dunk during a regular-season game against the Bucks in February 2018.

Almost a year later, the 7-foot-3 center was gone from New York, which said at the time of the trade that Porzingis had made it clear to the Knicks that he didn't want to be a part of their rebuild.

The Mavericks sent a package that included Dennis Smith Jr. and two future first-round picks to New York for Porzingis, with hopes the Latvian big man could provide a 1-2 punch with Rookie of the Year Luka Doncic for years to come.

Porzingis practiced with the Mavericks late in the season, but with Dallas out of the playoff hunt, Porzingis, his advisers and the team agreed on a plan to prioritize working on his body over playing, even after he was medically cleared.

Porzingis, who turns 24 on Aug. 2, holds averages of 17.8 points, 7.1 rebounds and 2.0 blocks in his three NBA seasons. He's a career 43.7% shooter from the field and 36.1% from 3-point range, making 1.5 treys per contest.

Powell recently exercised his $10.3 million player option for next season with the plan to work out an extension to stay in Dallas long term.

The Mavs consider Powell, 27, a key member of the supporting cast for their pair of young stars, Doncic and Porzingis.

Powell, originally acquired by the Mavs as a throw-in in the otherwise ill-fated Rajon Rondo trade, fits well with Porzingis because he has the ability to defend power forwards but play the center role on offense. Powell has developed into an elite finisher on pick-and-rolls, averaging 1.33 points per possession in those situations last season, according to NBA.com statistics, ranking second in the league among 31 players with at least 150 such possessions.

Powell, who averaged 10.6 points and 5.3 rebounds in 21.6 minutes last season, could become a full-time starter for the first time next season depending on how the Mavs address the center position in free agency.

Dallas, which enters free agency with $28.8 million in cap space, is prioritizing perimeter defenders who are good 3-point shooters as well as seeking quality depth at center.

The New York Times first reported the expected terms of Powell's extension.