Nexstar is a prime candidate for Tegna by default just because, though they definitely have conflicts (Portland OR, Tampa, Jax, a good chunk of Texas, WDVM/DC may also be a problem)--but given they're based in Texas, I could definitely see them wanting WFAA and KHOU as a crown jewel. They'd also have a footprint in Austin again, and they'd get San Antonio--basically all of Texas's major metros. If Sinclair/Trib gets FCC approval, it may be worth the risk for Nexstar to sidecar some of those conflicts.
Hearst would be a good candidate too. They have a couple conflicts too, but I think selling WMTW, WHAS, WFMY and KXTV to a Nexstar or Scripps basically takes care of it. They get a powerhouse in Portland ME so they don't have to middle with WMTW anymore, they'd get a presence in DC beyond office space with WUSA, and they'd get some amazing Belo legacy stations that need help in return, and I have no doubt Hearst could rehab a lot, if not all of them back to their one-time dominance.
(Mods feel free to move to speculation if I'm getting too deep in the weeds here)