The Sixers made another addition to their backcourt Tuesday, agreeing to a two-year, $18 million deal with free agent guard Gerald Henderson, a source confirmed to CSNPhilly.com's Jessica Camerato.

The deal was first reported by Cleveland.com's Chris Haynes.

Henderson, 28, averaged 8.7 points last season, shooting 44 percent from the field and 35 percent from three in his first and only season in Portland. Prior to that, the Duke product spent six seasons with the Charlotte Bobcats/Hornets, averaging double-figures in scoring four times. His best season was 2012-13, when he averaged 15.5 points, 3.7 rebounds and 2.6 assists.

Henderson is a career 31.9 percent shooter from three. He made a career-best 35.3 percent last season on a career-high 136 attempts.

Henderson, 6-foot-5, 215 pounds, has Philly ties. He played at Episcopal Academy alongside Wayne Ellington. When both graduated, Henderson went to Duke and Ellington ended up at North Carolina. Both were drafted in the first round in 2009, Henderson 12th overall, five picks before the Sixers selected Jrue Holiday.

Henderson's father, Gerald Henderson, played for the Sixers from 1987 to 1989 and was later a Sixers analyst for Comcast SportsNet.