Manchester United's executive vice-chairman Ed Woodward has warned fans that it might not be "business as usual" in the next transfer window.
He says the "scale of challenge" facing clubs after the shutdown could make for a very uncertain market and likely few big-money deals.
"Nobody should be under any illusions about the scale of challenge facing everyone in football and it may not be 'business as usual' for any clubs, including ourselves, in the transfer market this summer," he told a United Fans' Forum yesterday.
"As ever our priority is the success of team, but we need visibility of the impact across the whole industry, including timings of the transfer window, and the wider financial picture, before we can talk about a return to normality."
Woodward added that United are committed to completing the Premier League campaign.
"Like all of you, we are eager to see the team return to the field as soon as we are advised it is safe to do so, hopefully to complete a season which still held so much promise for us in the Premier League, the Europa League and the FA Cup when it was suspended,"
"We are in constant dialogue with our governing bodies about when and how that will happen and we will continue to engage with this Forum to keep fans consulted.
"And while it may be that games need to be played behind closed doors in the shorter term, we all recognise that football will not be fully back to normal until supporters are once again in attendance."
