NFL Commissioner Roger Goodell says he is comfortable with the idea of using replacement officials in preseason games.

The Hall of Fame Game is coming up Sunday and there is no end in sight to the labour dispute between the NFL and its officials.

Speaking to reporters at the Green Bay Packers' training camp Wednesday, Goodell says he doesn't think using officials with less experience will represent a safety risk to players. He says player safety is "obviously such a focus for us, they've been training on that basis."

Members of the NFL Referees Association were locked out June 3 after talks broke down.

Packers coach Mike McCarthy says he doesn't have any concerns about the league using replacement officials in pre-season games.