Soto, who had arthroscopic surgery, said he expects to play three to five games with the Minor League team and could return to the Cubs this coming weekend against the Red Sox.
"It's been tough, especially when you prepare the whole year to be out there," Soto said.
Aches and pains are part of a catcher's job.
"You manage to play with the aches and pains but stuff like this, rehabbing from surgery, that's a little different," Soto said. "It's tough when you see your teammates competing -- you want to compete with them."