Can he recover 100%? Absolutely
Is it a given that he will? No. That's the thing, there's no telling how Bazz' metatarsal (a very weak bone, even w/o a stress fracture) reacts to the surgical procedure, but for the most part individuals do make a complete recovery (even a slasher, quick change of direction individual like Bazz is not worrisome) BUT its not guaranteed, and there is a small chance that this elective surgery can exacerbate the problem.
That's why he's been in the boot all summer, and is now deciding to have surgey. Generally, surgery should always be the last resort. However, I'm assuming that rest and the restriction of the foot via the boot over the summer unfortunately did not do the trick.
The procedure is fairly common, will he be 100% at the time for "first practice"?, it's possible but I doubt it, nevertheless, over the course of the season (even the first game in Germany) he'll be A-OK, and back to the Bazz who can beat anyone with that quick first step.
(lol, I'm not talkin out of my a**, I'm a third year med student)
Call me crazy, but I think he may have benefitted from his foot last season. I think it forced him to be more cognitive on the court, b/c he couldn't rely on that natural athletic ability (and any of you who have prior experience, the "foot" and the "back" can basically cripple you at times). Offensively, once he fully recovers he should be that much more dangerous, driving the lane and kicking out instead of relying on his perimeter shot. Defensively the injury really took away that (fast twitch) ability to strip the ball and jump into passing lanes. I think we'll see the defensive Bazz of freshman year again.