Marcus Spears and Desmond Howard explain why they like the idea of the NFL adding one more team from each conference to the playoff format. (1:09)

If and when a transformational collective bargaining agreement is finalized -- and there is now mounting optimism it could be done sometime in the next week -- it is expected to change the NFL's playoff structure as it is currently constituted for next season, league sources told ESPN.

Under the current CBA proposal that NFL owners are pushing for, the playoff field would be expanded to seven teams from each conference, while the regular season would be increased to 17 games per team and the preseason shortened to three games per team, sources said.

As part of the proposed playoff format, only one team from each conference would receive a first-round bye as opposed to the two that currently do, league sources said. That would mean a revised postseason schedule that includes six games on wild-card weekend, with three on Saturday and three on Sunday.

The changes to the NFL's playoff format would take effect for the 2020 season, assuming the new CBA is ratified beforehand. Had the proposed format been in place this past season, the Los Angeles Rams and Pittsburgh Steelers would have been the next teams included in the expanded playoff field.

"That's been agreed to for a long time," one source familiar with the CBA talks said about the NFL's new playoff structure. "There wasn't a lot of disagreement to that issue."

Additionally, the players on teams that earn a first-round bye will receive postseason pay for that weekend. That was not the case under the current CBA, which has always rankled some players.

Now the sides are trying to work through the final issues, including getting the players to sign off on a 17-game regular season. That has yet to be agreed to, and it would not take effect until 2021 at the earliest.

As part of the deal now on the table, players would go from a 47% revenue share under the current deal to 48% share at 16 games, and then to a 48.5% share if they go to 17 games, shifting $5 billion of revenue to the players' side.

"The new CBA's not done, there's no term sheet yet, there still are issues being negotiated, but I'd be very surprised if there's not a new CBA for the new league year," the source said.