If Wakatakakage returns in November, that would give him four more months of recovery. He will have fallen out of juryo by then, but that’s still only eight months post-surgery. Even that seems incredibly ambitious.
The Google translation of the article says his return “within the year” is considered “delicate.” Not sure how it reads for real, as that sentence could mean a lot of things (calendar year, a year from the injury, etc.).