Originally published on ProWrestlingSheet.

Lucha Underground just locked down one of the hottest free agents in wrestling ... Pro Wrestling Sheet has learned Sami Callihan inked a deal for season three.

Multiple sources say Sami began negotiations to join the roster not long after appearing in a dark match during a season 2 taping, and he's expected to debut at the Temple this weekend.

Callihan -- known as Solomon Crowe in NXT -- was released from WWE last year and we exclusively reported that he asked for it because the wrestler had plans to reinvent his image on the indie scene.

No word on what kind of character he'll be playing in Lucha Underground at this point.