Tom Huddlestone gave Hull the lead midway through the first half but Paul Pogba scored a crucial goal after the hour mark to take the game away from the hosts.
Despite Pogba's goal being the difference for United, Neville was less than impressed by his contribution to the game.
Paul Pogba scored a crucial goal for Manchester United against Hull
Phil Neville labeled Paul Pogba 'average' after the game
"I thought he was like the rest of the Man United players, I thought he was very average," the former Red Devils defender told Sky Sports.
"I thought it was a real poor performance from all of the United team. There wasn't really a stand-out player in the United XI today and Pogba was part of that.
"He is going in the right direction. Seven goals from a midfield player and with lots of competitions he could finish the season with 12 or 13 goals.
Man United fans delighted at securing spot in EFL Cup final
Thu, January 26, 2017
Manchester United fans are delighted at securing a spot in the EFL Cup final after beating Hull
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Manchester United are in the EFL Cup final after beating Hull on aggregate
"That is not a bad return in your first season."
United will face Southampton at Wembley in the EFL Cup final on February 26.