The English Football League has accused UEFA of an "unwillingness to cooperate" after it says the European governing body's stance forced them to rearrange three domestic fixtures.
Everton and Wolves were scheduled to play their Carabao Cup third-round tie on Sept. 9 before Liverpool and Atlético Madrid's Champions League clash was, on Saturday, announced for the same day.
As a result, that contest and two others -- Liverpool and Tottenham in the League Cup and Wolves vs. Portsmouth in the Championship -- have been rescheduled.
An EFL statement read: "On Saturday, UEFA announced that it had scheduled Liverpool v Atlético Madrid for the same date, despite it being clear that Everton and Liverpool cannot play home fixtures on the same evening.
"The EFL met with UEFA officials on Monday morning to explore available options, however in those discussions it was made clear that they were unwilling to consider rescheduling the Liverpool v Atlético Madrid fixture due to the impact on supporters travelling from overseas.
The UEFA Champions League begins next week. Valery HACHE / AFP via Getty Images "Disappointingly, the League has therefore been forced to make changes.
"Over recent seasons the League has made a number of changes to accommodate the expansion of UEFA Club competitions -- a decision which was made without adequate consultation with domestic leagues.
"These changes have included splitting Carabao Cup round three ties across two weeks, and implementing draw conditions for round three which prevent scheduling conflicts for clubs playing in the UEFA Champions League and UEFA Europa League.
- Champions League draw becomes UEFA's latest stand against FIFA president Infantino - Champions League draw: Good games for Liverpool, bad for Barcelona
"This makes UEFA's unwillingness to cooperate all the more frustrating, not least for the supporters of the five impacted clubs, and we sincerely apologise for the inconvenience caused."
UEFA, in response, insisted it "always does its best to accommodate reasonable requests", but said the "potential conflict" only emerged after fixtures were published, when changes were no longer possible.
The European governing body said in a statement: "UEFA regularly receives scheduling requests from associations, leagues and clubs and always does its best to accommodate reasonable requests wherever possible.