Newcastle boss Steve Bruce says it is "morally wrong" for football to continue amid increasing coronavirus outbreaks at clubs.
The Magpies were the first team to have a Premier League match postponed this season, but more than 60 games in England have been called off.
Aston Villa and Derby are also having to field U23 teams in the FA Cup.
"Financially its right to play on, but for me, morally, it's probably wrong," said Bruce.
"I understand people want to see a game of football but we are just as vulnerable as everybody else.