The English Football League season can be completed in 56 days when it is safe to resume amid the coronavirus pandemic, clubs have been told.
But it is assumed that matches will be played behind closed doors.
A letter sent to all 71 EFL clubs by chairman Rick Parry, and obtained by the BBC, said no training should resume until at least 16 May.
The EFL is hopeful the campaign can finish in the summer, but there is no indication when it might begin again.
All 24 sides in the Championship still had nine matches to play when the league was suspended on 13 March.
Some clubs in League One and League Two have 10 games left.