Point guard Phil Pressey was impressive for the Celtics in their stretch of games at the Orlando Summer Pro League and that production has garnered him a multiyear contract, according to a league source. The source said the contract includes guarantees.

Pressey, a 5-foot, 11-inch guard who went undrafted out of the University of Missouri, signed with the Celtics following the draft and flourished in Orlando, averaging 9.4 points and 6.6 assists in 23 minutes per game. The Celtics have been seeking a true reserve point guard for years and appear to have decided on Pressey, who played at Waltham High while his father Paul was an assistant with the Celtics.

The Celtics indicated during the summer session that Pressey would be invited to camp and the two sides have been working on a deal the past two weeks. Celtics coach Brad Stevens expressed his admiration for Pressey last week in Orlando.

“I like Phil, I like Phil,” Stevens said. "There are some things that Phil can certainly get better at. He’ll work hard to do it. Right when I got the job, I sent him a text message that night and he called me about a minute after I sent the text and I think he really wants to be good. He’s very dynamic with the ball and I think if he continues to do that and make shots, he’s going to be in good shape.”