The Major League Baseball Players Association delivered a return-to-play proposal to MLB on Sunday that includes a 114-game season, deferred salaries in the event of a canceled postseason and the option for all players to opt out of a potential 2020 season due to coronavirus concerns, sources familiar with the details told ESPN.

The proposal, which was the first from the union and came on the heels of an MLB plan that was loudly rejected by the players, comes at a seminal moment as baseball tries to become the first major American professional sport to return. Although the players expect the league to reject it, they hope it will serve as a bridge to a potential deal this week.

The 114-game season, which under the union’s proposal would run from June 30 to Oct. 31, is expected to be immediately dismissed by the league; MLB has proposed an 82-game season and suggested that the more games teams play this year, the more money they lose. The union remains steadfast that players should receive their full prorated salaries, while MLB’s plan included significant pay cuts that affected the highest-paid players the most but covered all levels.

The inclusion of potential deferrals in Sunday’s proposal was an acknowledgement by the players that amid the coronavirus pandemic and unrest around the country, cash-flow issues could prove problematic for owners. The deferrals would occur only if the playoffs were canceled, a concern the league has voiced, and would total $100 million. They would apply to players whose contracts call for $10 million-plus salaries and include interest to make them whole.