It was announced during the NXT Takeover: San Antonio pre-show that Nigel McGuinness would be replacing Corey Graves as a color commentator on NXT. Graves noted that the reason for the move is because of his other commitments in the WWE. Graves will still be a color commentator on RAW.
McGuinness will join Tom Phillips and Percy Watson as part of the NXT announce team.
As @WWEGraves steps away from the @WWENXT Universe, we welcome @McGuinnessNigel to the broadcast team! #NXTTakeOver pic.twitter.com/Iv9sYqABYf
— WWE (@WWE) January 29, 2017