Sources: Bucks agree to re-sign Lopez for $52M

Giannis: Bucks will be better next season (0:41)

Giannis Antetokounmpo has high hopes for next season and says if the Bucks get better individually and as team, they will get to the next step. (0:41)

Brook Lopez has agreed to sign a four-year, $52 million deal to stay with the Milwaukee Bucks, league sources told ESPN on Sunday.

It's possible that no single player changed his future more over the past 12 months than Lopez did by signing with the Bucks.

After the 2015-16 season -- Lopez's eighth in the NBA -- he had gone a combined 3-for-21 from 3-point range. Since then, though, he has shot a staggering 1,224 3s -- including taking almost twice as many 3s (512) as 2s (274) this past season with the Bucks.

And after signing with the Bucks last year for their biannual exception, worth $3.4 million, Lopez became an essential part of Milwaukee's remarkable turnaround this season and its elite units at both ends of the court.

That allowed Lopez, 31, to enter free agency this summer as one of the top free-agent centers on the market, alongside Al Horford and Nikola Vucevic, and put him back in line for the kind of payday he received on his prior contract -- a three-year, $60 million deal with the Brooklyn Nets in 2015.

In addition to setting career highs in 3-point makes, attempts and percentage (36.5) this past season in Milwaukee, Lopez also averaged 12.5 points and a career-high 2.2 blocks per game.

The Bucks also reached a deal with Lopez's twin brother, Robin Lopez, according to multiple reports Sunday night, putting them on the same team for the first time in the NBA.

Robin, a 7-foot center, saw his playing time decrease in each of his three seasons with the Chicago Bulls, and he averaged just 21.7 minutes in 2018-19 as Chicago increasingly gave its younger players more of a run.

Though Bulls coach Jim Boylen praised Robin for his professionalism and willingness to help Chicago's young core while sacrificing his own stats, the Bulls had a roster crunch with big men, as 2018 lottery pick Wendell Carter Jr., Lauri Markkanen and Cristiano Felicio previously had signed multiyear deals.

Robin, 31, is entering his 12th NBA season, with previous stops in Phoenix, New Orleans, Portland and New York. He holds career averages 9.1 points, 5.3 rebounds and 1.2 blocks while shooting 53.1% from the field.

NBA free-agent contracts can't be officially signed until Saturday.

Information from ESPN's Tim Bontemps was used in this report.