English Football League chairman Rick Parry has warned his clubs face a £200m financial hole by September.
Parry had been called to give evidence to the Digital, Culture, Media and Sport committee on Tuesday about the impact of the coronavirus pandemic on sport, and he highlighted the particular difficulties facing the 71 clubs in his competition.
Asked in a worst-case scenario how many clubs might go out of business, Parry said: "That's a difficult one to answer.
"We are heading for a financial hole of about £200m by the end of September, cash hole, that we will need to fill. Clubs are stacking up creditors as well.
"We have a great deal of uncertainty around next season of course, the great undetermined matter being when we're going to return to play in front of crowds, which for the EFL is absolutely critical.
"We're much more dependent on revenue – and indeed much more dependent on the atmosphere generated by crowds potentially than the Premier League."
Parry was asked about player wage deferrals and cuts, and the role of the players' union, the PFA.
He said the EFL was on board with the PFA's appointment of financial services firm Deloitte to look at clubs' books to assess if there was genuine need for a club to be deferring wages.
"We all need to share in the pain," Parry said.
"We are really having an open-book policy, and we are going to show (the players) how deep the pain is. We are absolutely on board with the Deloitte process."
Parry said the EFL expected three clubs to be promoted from the Championship to the Premier League, or "the lawyers are going to get wealthy".
There have been reports that top-flight clubs want to play out the season with the threat of relegation removed, but Parry said it would get very "messy" if that happened and warned it would be a breach of the tripartite agreement between the Premier League, the EFL and the Football Association.
"We expect three Championship clubs to be promoted – the Premier League are aware of our position on that. The Premier League expects three clubs to be relegated," he said.
Asked what would happen if the Premier League's position changed, Parry said: "The lawyers are going to get wealthy if that happens. There would be a degree of outrage from a number of clubs in our Championship, and it would be a breach of the tripartite agreement.
"The safe answer is that it would get very messy. Our expectation is there would be three clubs promoted from the Championship."
Parry described parachute payments to clubs relegated from the Premier League as "an evil that needs to be eradicated".
"There is strong opposition to them in the EFL, that's almost a given, apart from the clubs receiving them," he said.
"They are a prime example of clubs being protected or helping them adjust to the chasm (between the Premier League and the Championship). But if we didn't have a chasm in the first place you wouldn't need them."
Parry said the desire to finish the season at EFL level behind closed doors was mainly a consideration of sporting integrity – saying financially there was almost no benefit.
"At our level if we were to play behind closed doors then it's finely balanced economically, almost neutral. For many clubs it would cost them to play – the cost of staging games."
England and Wales Cricket Board chief executive Tom Harrison said the impact of the pandemic could cost his organisation £380million.
"We are still working out the impact of Covid-19," he said. "We anticipate with no cricket this year a worst-case scenario could be as bad as £380million.
"That would be the loss of 800 days of cricket across all of our professional clubs and the ECB. That is the worst-case scenario for us this year."
There will be no professional cricket before July, but Harrison is hopeful of fitting in a "significant" number of Test matches.
England are due to play West Indies and Pakistan this summer.
He added: "With a following wind hopefully will be able to play a significant number of Test matches this summer which will helps us mitigate those financial losses that we are facing at the moment."
Rugby Football Union chief executive Bill Sweeney says the governing body will lose £107million if the autumn internationals are cancelled.
The RFU has already lost £15million due to the crisis, but the cancellation of November's games would hurt them much more significantly.
He said: "If the autumn internationals go ahead in November, which are key for us, we will still lose £32million in revenue.
"If they go ahead but behind closed doors that is a negative impact of £85m and if they are cancelled entirely that will be £107m on top of the £15m we have already lost.
"So it is a very significant loss of revenue and we are doing what we can to mitigate it."
Asked what the impact would be if rugby was not able to restart until 2021, Sweeney did not skirt around the issue.
"That would be catastrophic, 85 per cent of our income comes form hosting men's international games at Twickenham," he said.
"Twickenham is a major asset for us. When you own a stadium it is a major cost and at the same time brings in large revenue.
"If this was to be prolonged and the Six Nations games were impacted, then it would be a catastrophic impact on rugby union in England.
"We would be looking at some very severe situations."
