Quinones and the 76ers agreed to a two-way contract Wednesday, Shams Charania of The Athletic reports.
Quinones will become an unrestricted free agent after the Warriors declined Friday to extend him a $2.29 million qualifying offer, Michael Scotto of USA Today reports.
Quinones finished Sunday's 140-88 loss to the Celtics with 17 points (7-16 FG, 3-10 3Pt) and five rebounds over 33 minutes.
Quinones played the final 1:29 of Tuesday's 123-112 win over the Wizards, finishing with one assist during his time on the court.
Quinones scored a career-high 17 points (6-11 FG, 4-8 3Pt, 1-2 FT) and added five rebounds over 23 minutes in Saturday's 141-134 overtime loss to the Hawks.
Quinones finished Thursday's 128-109 loss to the Thunder with zero points (0-3 FG, 0-2 3Pt) across four minutes.
Quinones accounted for 18 points (6-12 FG, 2-6 3Pt, 4-5 FT), four rebounds, four assists, a steal and a block across 24 minutes in Sunday's 121-115 preseason overtime win over the Kings.
Quinones signed a two-way contract with the Warriors on Friday, Shams Charania of The Athletic reports.
Quinones secured 32 points (8-17 FG, 4-9 3PT, 12-13 FT), six assists, four rebounds, three steals and two blocks across 32 minutes of Saturday's 108-101 Summer League loss to the Raptors.
Quinones posted 26 points (10-16 FG, 5-8 3Pt, 1-2 FT), four rebounds, two assists and one steal in 27 minutes during Monday's 100-94 Summer League loss to Sacramento.