I don't think it is "assuming" anything -- if he didn't receive a second round guarantee based upon his week at the combine, then he isn't viewed as a draftable commodity. He has the potential to change that, if he returns.
That doesn't mean that he WILL change his stock, but at least he'd have that possibility.
Tyus might not be the best example to reference in support of your point.
Yeah, I think the issue is that there seems to be strong assumptions in polar opposite ways. I feel like most believe that either you absolutely should jump at whatever opportunity is out there to get paid b/c it's money OR that a player should always return to improve their stock. Maybe that's a slight misrepresentation but that's often how it reads.
The reality with Tyus, IMO, is that he's a bit fringy as an NBA prospect/player. Would that change given a third year in school? I don't know, I tend to side with those who have a bit of doubt on that front.
Having said that, returning is an interesting option for him based on the fact that the team around him should be better, he clearly has areas he's at least capable of improving and he potentially has the opportunity to crush the books and get a degree in three years, which he'll likely need either way (obviously he can finish the degree at another point as well).
I personally believe people get too caught up in draft position and tend to forget that at this point the G League IS NOT a developmental league. There aren't 32 teams, the best players to come out of the league are guys like Rafer Alston and others (unless you're going to count guys like Capella who were there for a month), the level of play is not particularly high (quinn cook was like Steph Curry and he's really a fringy guy as well) and the lifestyle/pay is not particularly exciting.
So all of that said, my personal advice to guys would be that if you are an absolute freak athlete and you're ready to work your tail off, then go (Jeremy Grant is still a pretty average basketball player but his size/athleticism make him pretty solid). If you just want to go b/c you want to go, then go. If you're a lottery pick, then there would be almost no reason to stay, so go.
BUT, if you have some significant room for improvement and reps will help with that development, then there is a pretty strong case to be made that the reps you get in college combined with making at least some progress towards a degree you're exceedingly likely to need at some point in the next 3-4 years, then coming back could be a really good option, regardless of where you end up getting drafted.
