Acknowledging that a lot of our guys will be playing a couple different spots on the floor, I see the 2019-2020 roster (if we have no transfers, and definitely not going to assume EJ Liddell yet) like this:
Carton / Walker
Muhammad / Washington
Jallow / Gaffney / Ahrens
Andre / Young / Ledee
Kaleb / Potter
At any point we might play a 3-guard line-up that could see one of Muhammad or Washington playing some at the 3. Jallow and Ahrens might occasionally see some time at the 2 if we need more size in the backcourt. Gaffney might split his minutes between the 3 and the 4. Ledee might actually play more at the 5 than the 4 depending on foul trouble with the bigs.
It is difficult to see a comfortable fit for EJ, or for one of the other forwards, without a transfer happening before 2019-2020. That won't be as much of an issue the following season with Andre and Potter graduating out of the frontcourt, but for 2019-2020 it does look a little crowded.
That said, I'd be pretty surprised if we have zero transfers after this coming season. I was concerned that we heard basically no mention of Jallow from the Spain games. Box scores would have helped a lot and of course maybe he was really good on the defensive end for all we know, but at some point in his career (and probably sooner than later), he is gonna have to figure out what he can do to deliver some sort of consistent production.
Young had one good game in Spain but he's another guy I am keeping an eye on. This season is his chance to carve out a niche before the 2019 class comes in. If he can't do that, he could easily be looking for a better situation for himself.
I tend to think that most of the freshmen will probably give it more than just one year before seriously thinking about transferring, but I do think there is some possibility of a transfer with Ledee if he's not happy with his role or how things look for him going forward, just because he is so far from home to begin with and had lots of interest from B12 schools.
This conjecture isn't in any way trying to belittle any of these guys, as in fact we're talking about 3 of the higher upside guys on the current roster, and any one of them could easily end up a major contributor for us this coming season. It's just speaking from a purely situational perspective, with freshmen like Muhammad and Washington probably having a little more opportunity in the backcourt than Ledee has in the frontcourt (and Ahrens being an Ohio boy), Kaleb a sure-fire starter, Andre having played big minutes last season even when we had KBD and Tate (so we know the staff's a fan) and him being a junior like Potter, so they are a little more entrenched in the roster.
To me Jallow has the biggest opportunity of the guys I mentioned that might be weighing their options after this season is done. In fact, Musa has a great chance to seize that starting 3 spot... but he really needs to step it up. His shot hasn't looked good in the limited practice stuff we've seen so far from this summer and not hearing about any contributions from him in Spain just makes me wonder if he's gonna get it done this season. But it's super early.