The NHL is asking players to defer an additional 13 per cent of their 2020-21 pay as part of return-to-play negotiations for the upcoming season, Sportsnet can confirm.

The NHLPA already agreed to a 10 per cent salary deferral in the six-year collective bargaining agreement extension signed in July, ahead of the league's completion of its 2019-20 campaign in Edmonton and Toronto bubbles.

The news was first reported by Larry Brooks of the New York Post.