The Boston Celtics are not yet finished filling out their roster.

ESPN's Tim Bontemps reported Thursday that the Celtics are going to sign Javonte Green to a partially guaranteed contract.

Green is listed at 6-foot-4 and 205 pounds. The 26-year-old forward played four seasons for Big South conference team Radford from 2011-12 through 2014-15 and averaged 14.4 points over his career. He has spent time playing professionally in Europe after college, and as noted in the tweet above, he impressed during Boston's NBA Summer League tournament run in Las Vegas earlier this month.

One thing we learned about Green in Las Vegas is that he has some serious athleticism.

Celtics fans are hoping 7-foot-6 center Tacko Fall is the next Summer League standout to sign a contract with the team. Celtics president of basketball operations Danny Ainge told 98.5 The Sports Hub's "Toucher and Rich" show Thursday morning that the team is "trying to still get a contract done" with Fall.

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