The Tigers and Fox Sports Detroit haven't commented publicly about the reports.
After the fight, the pair were suspended from the booth and the Tigers brought in Matt Shepard and Kirk Gibson to call the rest of their games.
The two worked together for almost 17 years in the Tigers broadcast booth and had opposing personalities and broadcast styles, according to The Athletic's Katie Strang.
Impemba had been the primary play-by-play voice for the Tigers since 2002, with Allen joining him the following season. Neither have spoken publicly about the incident, which served as a sour ending to almost 17 seasons together in the broadcast booth.