Quintana (thumb) is scheduled to throw a four-inning simulated game Sunday, Russell Dorsey of the Chicago Sun-Times reports.
Quintana played catch prior to Saturday's game against the Brewers, and he'll continue to build his strength back up with a four-inning session at the alternate training site Sunday. The southpaw hasn't had any issues recently. Although no timetable for his return has been announced, he could be back soon if Sunday's sim game goes well.