Jackson has been ruled out for Friday's exhibition against the Hornets due to an ankle injury, Chris Herrington of The Daily Memphian reports.
Head coach Tuomas Iisalo said that Jackson tweaked his ankle during Friday's preseason win over the Bulls, so he'll miss Friday's preseason finale and will be listed as "day-to-day." For now, he should be considered questionable for Wednesday's regular season opener against the Jazz.