A lot can happen between now and next signing day, as it pertains to transfers, NFL departures, and medicals. Generally, we lose about 2-3 players an off-season. So, assuming 16 is the count right now, and with a few losses, let's say it'll be 20 available. Now, I can see the three 5th years you mentioned coming back in Prosise, Daly and Jarron Jones, assuming he bypasses NFL assuming he has an awesome season. (too many assumptions lol)
So, that'll put the number to 17.
Need wise:
QB: Don't really need one, but it's good to take one every class. This is Golson's last year, and going with 3 scholarship QBs, is fine or somewhat a risk, depending on who you ask. For all extensive purposes, let's say that we'll take one. (1)
RB: We have four, adding one more gives us a solid # (1)
WR: We're losing Brown and Carlisle. Depending on Fuller's season, he could be NFL bound. We have 12 currently, and that's a little rich too begin with. However, I think adding two receivers won't upset the balance. (2)
TE: We have 5, which is perfect. We can pass on one year next year. Especially since our top target, Hausmann, committed to Ohio State last week.
OL: We'll lose four players. Martin & Hegarty are out of eligibility. Harrell I don't see coming back (too early to assume, who knows, he may have a Mike Golic senior season), and Stanley, unless he craps the bed on the field, won't return for another year. Meaning, we'll have 11 scholarship OL. Kelly always talks about depth up front on the OL, and having 15 bodies there is perfect. (It's what we had there this past season) So let's say 4. Two OT's and 2 OG/Cs. (4)
DE: Okwara is out of eligibility. But I don't see it as a big need as it may appear to be. Bo Wallace will most likely grow into that Weakside role, and we'll still have Rochell, Trumbetti, Blankenship, Jhonny Williams, and Jay Hayes. 6 bodies is decent, but adding two more will be wise. (2)
DT: Lose Sheldon and possibly Jarron Jones. We have quite the amount of depth. Matuska, Bonner, Mokwuah, Cage, Tillery, Tiassum, Dew-Treadway and Taylor; 8 guys. I think we should go big or go home. Target the top guys and if you can't get one of them pass on DT. (1)
LB: There's the potential of losing Jaylon. Schmidt & Grace will be gone. John Turner is out of eligibility and I don't currently see a 5th year for him; so meaning we'll could potentially lose 4 LBs. Now, at LB we have plenty of depth. But, if you lose 4, it's best to replace a few. (2)
CB: Russell is back! But, maybe for one year, depending if he goes beast mode or not. Luke really emerged as a sophomore, had his ups and downs a few games, but overall, if he can be consistent he could jump to NFL, but for now, let's say he stays. Farley at Nickel will be out of eligibility, so two guys are gone. We brought in three this year, but we should add at least one. (1)
S: Shumate done. Barring an All-American type season from Redfield, I don't see him bolting to NFL. Baratti has a 5th year, but with all the injuries he's had, who knows if he can stay healthy (tough break, too.) We'll have just Drue Tranquill, Mykelti Williams and Nicco Fertitta. Only 4 scholarship returners. 6 is a comfortable number, but 7 would be ideal. (3)
However, a lot can change with the scholarship numbers and of course, the personnel on the team in the next year. But, for now, this is how I can see the 2016 class playing out.
