There's a few divestitures that may be necessary for this deal to be approved. Going down the list from Wikipedia (so may not be comprehensive because they listed by CoL and not market):
Terre Haute, IN (WTHI [CBS/FOX], WTWO [NBC], WAWV [ABC])
Davenport, IA (KWQC [NBC], KHBF[CBS], KLJB [FOX], KGCW [CW])
Lafayette, LA (KFLY [CBS], KADN [FOX/NBC/My])
Roanoake, VA (WSLS [NBC], WFXR [FOX], WWCW [CW])