Schaub is recovering from a surgery several months ago to repair a Lisfranc injury in his right foot and a follow-up procedure that took place in April.
Schaub said he didn't doubt he would be ready and that his recovery is right on schedule, according to the Texans' official website.
"We're going to put the reins on him, so to speak," Kubiak said. "He will do drill work, could throw some seven-on-seven, but he will not be put in a team environment where he might get tripped up or something like that happens."
Schaub is entering his ninth season in the NFL and his sixth as the Texans' starter. Last season, he threw for 2,479 yards and 15 touchdowns while leading the Texans to a 7-3 record before the injury ended his season after Week 10.
"He's ready to go," Kubiak said. "It's us being cautious with him right now."