Wehrlein moved to Sauber for the 2017 F1 season, having completed his rookie campaign with Manor, but his start has been delayed by a back injury sustained in the Race of Champions event in January.
The German missed the first pre-season test at Barcelona, withdrew from the season-opening Australian Grand Prix after Friday practice and was ruled out of this weekend's Chinese GP.
While a decision on whether Wehrlein would return next weekend in Bahrain is expected in the coming days, Wolff believes he will be back in action.
"It was a wise decision [to withdraw from the Australian race], which he had discussed with Monisha [Kaltenborn] and myself before," Wolff told German broadcaster RTL.
"We accepted and respected this decision.
"At the beginning of this week we had the same discussion once again. We could have forced Pascal to be [in China].
"He would have raced, he would have suffered the jetlag and he would have moved on to Bahrain. However, this wouldn't have been an ideal preparation.
"So we decided to give him 10 days of proper training instead to return him to the shape he needs to properly drive this car.
Read the full article on eurosport.co.uk: Wolff expects Wehrlein back for Bahrain