Connor Goldson came through a 13-hour open-heart operation during the night.
He spent Sunday night in the intensive care unit after doctors finished the job.
Goldson wrote a brief post just after midnight to say he's holding steady.
This was the second time in recent months he has needed major surgery.
The player has now left hospital and is resting at his house with his family close by.
Clinicians have him under observation as he recovers.