Cooper was selected in the second round (No. 48 overall) out of Auburn, where he appeared in just 12 games as a freshman after being sidelined with an ankle injury.
He looked very good in that limited action, though, averaging 20.2 points, 8.1 assists and 4.3 rebounds.
His two-way deal will keep the Hawks from needing to make a coiciding a move to their 15-man roster.
Cooper can appear in up to 50 NBA games with the deal, speding the rest of his time with the G League’s College Park Skyhawks.