LOS ANGELES — Russian centre Timofey Mozgov has agreed to a four-year, $64 million contract with the Los Angeles Lakers, a person familiar with the negotiations told The Associated Press.

Jordan Clarkson has agreed to a four-year, $50 million deal to return to the Lakers, a person with knowledge of the details told The Associated Press on Friday.

The person spoke on condition of anonymity morning because the deal hasn't been signed.

The person spoke on condition of anonymity Thursday night because the deal can't be signed until July 7.

The Lakers moved swiftly in the opening minutes of the NBA's free agent signing period to use a big portion of their roughly $55 million in cap room on the 7-foot-1 Mozgov, a six-year NBA veteran.

He won a ring with the Cleveland Cavaliers last month despite barely playing in the post-season, averaging 5.8 minutes in 13 appearances. He started 48 games for the Cavs during the regular season after returning from off-season knee surgery, averaging 6.3 points and 4.4 rebounds while making 56.5 per cent of his shots.

The Lakers paid an eye-popping price for a soon-to-be 30-year-old centre who made $4.95 million last year and has never averaged 11 points or eight rebounds per game in an NBA season.

Yet the deal represents both the inflated realities of the NBA's increased salary cap and the necessity of overpayment by Los Angeles.

The Lakers aren't the most attractive free-agent destination in the wake of the worst season in franchise history and Kobe Bryant's retirement. After going 17-65 last season, they realize they're unlikely to land Kevin Durant or other top players eager to win championships now.

Instead, they're hoping to add veteran leaders and role players around their intriguing young core, which includes D'Angelo Russell, Julius RandleJordan Clarkson and No. 2 pick Brandon Ingram.

Mozgov began his NBA career with New York in 2010, but was traded to Denver at midseason. He spent the next four years with the Nuggets, playing under Lakers lead assistant coach Brian Shaw, before a trade to Cleveland in January 2015.

Mozgov averaged a career-best 10.6 points in that abbreviated season with the Cavaliers. He became the first Russian to play in the NBA Finals that summer, giving impressive performances as the Cavs' starting centre.

But he struggled to recapture that excellent form after off-season surgery to remove a cyst from his knee. Heading into his free-agent contract season, Mozgov perhaps pushed too aggressively to return from injury, and Tristan Thompson became the Cavs' starting centre in the post-season.

Mozgov is moving to the town where his last name became an unfortunate verb in November 2010 when the Clippers' Blake Griffin threw down an astonishing rebound dunk on Mozgov's head at Staples Center. Ever since, a player who gets dunked on in such an outrageous fashion has been "Mozgoved."

Mozgov's arrival with the Lakers certainly means the departure of Roy Hibbert, who averaged a career-low 5.9 points in his only season with the Lakers. Los Angeles had only six players under contract heading into the weekend, although Ingram will sign along with the likely return of three restricted free agents: Clarkson, Tarik Black and Marcelo Huertas.

Mozgov also could be a mentor to Ivica Zubac, the 7-foot Croatian teenager drafted by the Lakers with the 32nd overall pick last week. Zubac wants to play in the NBA next season, and his draft stock apparently slipped because he was unwilling to be stashed in Europe for another year.

Clarkson is a rising star after two seasons with the Lakers, who acquired the 46th overall pick from Washington on draft night in 2014. The Missouri product has been a steady scorer and a rare bright spot on the two worst teams in Lakers history.

After averaging 11.9 points per game and making the NBA's All-Rookie team in the 2014-15 season, he boosted his production to 15.5 points last season, second-most on the team behind Kobe Bryant.

Yahoo Sports first reported the deal.

Clarkson started 79 games last season, teaming up with D'Angelo Russell in the Lakers' intriguing young backcourt. Although they didn't win many games, they showed more than enough promise for the Lakers to keep them together in the core of a young roster that also includes forwards Julius Randle and Larry Nance Jr. along with Brandon Ingram, the No. 2 overall pick in last month's draft.

The smooth-shooting San Antonio native added 4.0 rebounds and 2.4 assists per game to his scoring output while playing a team-high 32.5 minutes per game. He also capably handled a transition to shooting guard after largely playing as a point guard during his rookie season.

The Lakers extended a qualifying offer to Clarkson on Thursday, making him a restricted free agent and allowing them to match any offer made to him by another team. Clarkson had repeatedly said he didn't intend to leave the Lakers, considering his new contract a formality.

After finishing a franchise-worst 17-65 last season, the Lakers are moving quickly to use their estimated $55 million in salary cap room during the opening hours of free agency.

Earlier Thursday night, a source confirmed to the AP that Los Angeles reached agreement with Russian centre Timofey Mozgov on a four-year, $64 million free-agent contract.

Los Angeles also made qualifying offers to Tarik Black and Marcelo Huertas.