After just 11 minutes against the Reds, Soares was forced off with an injury.
The north London derby at Spurs has been put off because the Gunners do not have enough players to field a side.
The game was called off by the league.
The decision was made due to a combination of Covid-19, existing and recent injuries and players on international duty at the Africa Cup of Nations.
The 21st top-flight game to be postponed this season is due to Covid.
If a club has 13 outfield players and one goalkeeper, they must play a game.
Pierre-Emerick Aubameyang, Thomas Partey, Mohamed Elneny, Nicolas Pepe, and Cedric Soares are all on Cup of Nations duty, while Calum Chambers, Bukayo Saka, and other players were injured in the first leg of the Carabao Cup semi
Granit Xhaka was sent off in the first half at the game, while Martin Odegaard missed the game due to illness.
The game had to be called off because the team requested a postponement.
The game was called off on Friday because of Covid-19 and injuries in the Clarets camp, making it the second game to be postponed this weekend.
The league said its postponement rules are designed to protect the wellbeing of players and staff while maintaining the sporting integrity of the competition.
"Club requests are assessed on a case-by-case basis, based on existing rules and adapted Covid-19 postponement guidance, implemented in light of the Omicron variant," it said.
The ability of a club to field a team, the status, severity and potential impact of Covid-19, and the ability of the players to safely prepare for and play the match are some of the factors examined by the board.
The league's specialist staff scrutinizes the detail within applications before the board makes a decision.
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