AP source: CJ McCollum agrees to extension with the Blazers

PORTLAND, Ore. (AP) A person familiar with the deal confirms that guard CJ McCollum has agreed to a four-year, $106 million contract extension with the Portland Trail Blazers.

The person spoke to The Associated Press on condition of anonymity on Monday because the deal hadn't been formally announced by the team. It was first reported by Yahoo Sports.

McCollum, who was named the NBA's Most Improved Player, averaged 20.8 points, 3.2 rebounds and 4.3 assists for the Blazers during the regular season. He raised his scoring average by more than 14 points over the previous season.

As the 10th overall pick for the Blazers in the 2013 draft, McCollum bided his time on the bench for his first two seasons. He became a starter in the backcourt with Damian Lillard last season after four of the team's starters departed in the offseason.

AP Basketball Writer Jon Krawczynski contributed to this report.