According to this ranking, there are 4 MAC players in the top 200 ranked players in the transfer portal.
https://247sports.com/season/2024-football/transferportaltop /
There'll be plenty of transfers from the MAC, but suspect most of them are going to be transfers down, or lateral moves. If that trend continues, it's won't surprise me if the volume in the portal drops a bit going forward.
Right now it and the NIL are shiny new toys, and they're immature markets. Nobody is quite sure how best to utilize either, and strategies will become more refined as people create more data on the success of the portal as a recruiting tool.
That list goes down to 375, and here is what I found. Players leaving the MAC:
#40 DeQuan Finn, Toledo QB (To Baylor)
#76 Kurtis Rourke, Ohio QB (To Indiana)
#119 Jalen Husky, BG CB (To Maryland)
#127 Devin Grant, Buffalo S (To Syracuse)
#181 Vinny Sclury, Toledo IOL (To Texas Tech)
#185 Tanner Koziol, Ball St TE (To Louisville)
#219 Corey Steward, Ball St OT (To Purdue)
#258 Trey Jones, CMU S (To Texas A&M)
#269 Andreas Paaske, EMU TE (To Arkansas)
#274 Mikah Coleman, EMU DL (To U. Cincy)
#308 Ryan Johnson, Akron DL (To S. Miss)
#333 Casey Thomas, Akron LB (To Virginia)
#353 Corey Thomas, Akron LB (To Virginia)
#375 Zach Conti, EMU IOL (To S. Miss)
Players to the MAC:
#297 Jaddarrius Perkins, to Toledo CB (From Florida)
#309 Porter Rooks, to EMU WR (From NC St)
#331 Jefferson Adam, to Buffalo Edge (From Iowa St)
#345 Drew Vlotto, to EMU QB (from Minnesota)
#348 Stanley King, to Kent St WR (from Northwestern St)
So, from that group, about nine are moving up to P5 teams from the 1-290 group. Above 290, it is a mix of players coming and going, players moving up, and players moving down.
It's a new world, and those that adapt will do fine. I expect:
1.The best teams will become even better, as they can shed their worst players, and replace them from the best proven players from elsewhere, plus very good Freshmen.
2. Bottom P5 teams will either have to come up with a lot of NIL money, or find themselves always several steps behind, a step in recruiting Freshmen, and another in the portal, as they lose their best players, and have to look for not-quite tip-top replacements
3. G5 programs will have to be nimble. They will lose many of their best players later in their career, but can replace them with top FCS or Division II talent, or with players who didn't make the team at P5 schools.
4. FCS and below will lose their best players, but have an ample supply of players moving down.
Overall, things will remain more or less the same, with the exception that the top teams will get even better, and that second tier teams will have the possibility of spending their way into a higher tier...if it works.