The club repeatedly has insisted Johnson has not experienced a setback, and the first baseman will be allowed to continue baseball activities while he waits for the next round of tests.
Johnson remains committed to trying to return this season.
“I know I want to,” he said. “I’ll keep working. That’s my goal. But I want to be healthy before I get out there. … I didn’t want it to take this long, but this what I’ve got to do.”
The club won’t put a timetable on his potential recovery.
“I’m not optimistic or pessimistic,” Bowden said. “I don’t know. There’s not a doctor that doesn’t know. We’ll know when we know.”