Well their website says they avoid conference rematches.
So I am assuming that might include other rematches as well. So Mizz and NCSt are out. If I had to take a wild guess at the pools:
1) Iowa, UNI, OreSt
2) PSU, VT, CMU
3) Mizz, Cornell, Lehigh
4) NCSt, ASU, Hofstra [Post edited by Hokie Flyer at 09/21/2021 11:20PM]