FA chairman Greg Clarke has admitted it is hard to see fans returning to football any time soon.
If the sport is to return to complete the Premier League and EFL seasons then all matches will have to be played behind closed doors to maintain social distancing measures.
Clarke said supporters are the 'lifeblood' of the game but admitted the game faces 'substantial changes'.
'The reality is that we just don't know how things are going to pan out,' he wrote in a letter to the FA governing council.