Professional Footballers' Association chief executive Gordon Taylor says Premier League games may not be played over the full 90 minutes when the season resumes.
The Premier League will hold further talks this week in order to find a way of completing the top-flight season.
Player safety is at the forefront of any discussions so there could be a few changes to the game in England if the Premier League campaign is played to a finish.
These measures include having more substitutes per match and playing fixtures at neutral venues but the most drastic change could see the duration of games reduced.
Taylor told BBC Radio 4 on Tuesday: "We don’t know the future but we do know what propositions have been put, what ideas have been put [forward].
"The possibility of having more substitutes, games possibly not being the full 45 minutes each way with talks of neutral stadiums.
"There’s lots of things being put forward - try and wait and see what the proposals are.
"And then have the courtesy to let he managers and coaches and players assimilate all those and come to a considered view."
When asked about the chances of games being shorter than 90 minutes, Taylor said: "All I’m saying, there’s a lot of possibilities.
"Ideally you want to keep the integrity of the competition. And of course, that was about playing home in a way.
"And it’s about having the same squad of players as ideally as before it was suspended.
"So there’s lots of points to be made, but above all, can the seasons be completed? Can they be completed, but above all else, can they be completed safely."
The Premier League is hoping the first match back would be played on June 12th as they look to finish the 92 remaining games.
Meanwhile, the Bundesliga is set to get the green light to return on May 15th with the German government expected to agree on a further easing of coronavirus restrictions later this week.
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