Forward Pascal Siakam has agreed to a four-year, $130 million maximum rookie contract extension, agents Todd Ramasar and Jaafar Choufani told ESPN.

Siakam, considered the cornerstone of the Raptors' future, is the third player in the 2016 NBA draft class to agree to a maximum contract -- along with the Philadelphia 76ers' Ben Simmons and Denver Nuggets' Jamal Murray.

The sides completed on the extension on Saturday afternoon, ahead of Monday's 6 p.m. ET deadline for 2016 draft class extensions.

Siakam is one of the Raptors' great scouting and player development success stories. A 27th overall pick who started playing basketball at 16 years old in Cameroon, Siakam was voted the NBA's Most Improved Player a year ago and played an integral part in Toronto's first NBA championship.

He averaged 19.8 points, 7.5 rebounds, 3.7 assists and 0.7 blocks per game in the NBA Finals -- including 23.8 points on 59 percent shooting in the Raptors' four victories over the Golden State Warriors.