Drell produced 16 points (6-10 FG, 2-5 3Pt, 1-4 FT), eight rebounds, five assists and two steals in 35 minutes during Saturday's 108-105 loss to the Wisconsin Herd.
Drell (thumb) has been ruled out for Tuesday's game against the Hawks.
Drell (thumb) has been ruled out for Saturday's game against the Cavaliers.
Drell (thumb) is out for Thursday's game versus the Spurs.
Drell won't play in Wednesday's game versus the Lakers due to a right thumb sprain.
The Bulls signed Drell to a two-way contract Saturday, Shams Charania of The Athletic reports.
Drell signed a contract with Chicago and then was waived by the team, Keith Smith of Spotrac.com reports.
Drell finished with 12 points (4-5 FG, 2-3 3Pt, 1-4 FT), six rebounds, two assists, four steals and a blocked shot over 29 minutes in Windy City's loss to Westchester on Sunday.