Richard Sherman predicted on Thursday that a lockout will occur when the NFL collective bargaining agreement expires.

"It's going to happen, so it's not like guys are guessing," Sherman said.

The current CBA expires after the 2020 season. Players are believed to be looking for certain economic changes, including more guaranteed money in contracts.

Owners locked out the players for four months during the 2011 offseason, but the sides eventually agreed to a 10-year deal before the regular season was jeopardized.

Sherman is expecting a lockout this time around "because there was a lockout before. We don't plan on changing anything about the deal we currently have right now ... I don't think it's going to be negotiated before the end of the CBA."