The NFL distributed crew assignments to referees this week amid indications of continued progress toward a deal on a new collective bargaining agreement with the NFL Referees Association, sources told ESPN.
The assignments did not include any of the replacement officials the league has onboarded and vetted in preparation for a potential lockout. The league's officiating department has planned to start training those replacement officials beginning Friday. The existing CBA between the sides is due to expire May 31.
Both the NFL and the NFLRA declined comment.

