I still can't find a single thing to support that he's had another setback. Surely Google would reveal something, no?
I suppose the one thing could be if we're in the market for a player to cover him, then we might feel it better to keep it under wraps to avoid looking desperate for a replacement so clubs would look to price gouge even more. There wouldn't really be any other reason not to be forthcoming with details if he had had a setback.
I'd imagine if we've not heard anything about it in the next few days it's probably nothing. However, it's clearly not an easy thing to recover from and there may I suppose be setbacks that require additional surgeries, so I doubt you can rule it out either at this point. Also, even if surgical intervention was needed, it's possible it could be a small touch up I guess rather than a major setback. Can only hope I guess at this point.