After over 2 1/2 years away from an NBA floor, Jonathan Isaac could make his return to the Orlando Magic Monday. Jonathan Isaac was upgraded to questionable for Monday’s home game vs. the Celtics, league sources told the Orlando Sentinel Sunday early afternoon. The Magic confirmed the Sentinel’s reporting, upgrading Isaac to questionable on their 2:30 Sunday injury report. Isaac will be upgraded to available after the team’s Monday pregame walkthrough if everything goes according to plan, the sources added, allowing Isaac to play in his first NBA game since Aug. 2, 2020 — when he tore the ante…