Sheffield United's League One clash with Colchester United, scheduled to take place on Saturday, September 5, has been postponed because of international call-ups.
David Edgar (Canada), Callum McFadzean (Scotland U21s), Adams (England U20s) and Louis Reed (England U19s) have all been called up by their respective nations.
Loan defender Edgar is expected to play in World Cup qualifiers against Belize on September 4 and 8, and McFadzean has been called up to Scotland U21s for their UEFA European U21s Championship qualifying clash against Northern Ireland.
Adams, previously of England C, is in a 20-man England U20 squad to face the Czech Republic at Shrewsbury Town's Greenhous Meadow on September 7.
Reed, meanwhile, has been named in the England U19 squad for friendlies in Germany and Croatia next month.
A new date for the Colchester clash will be announced by United in due course.
United boss Nigel Adkins had previously insisted he would prefer to play the game: “If we can play that game then we will," he said earlier this week.
"We’ve got a few more days to think about it but, if it’s possible (to play) then we’ll do it rather than call the game off.
“I don’t like doing that. I prefer playing games. We’ll discuss things more and see. Ideally, though, we’ll be playing.”