Chelsea boss Thomas Tuchel has called the Premier League schedule "not fair" and said his side "are struggling" after sustaining more injuries.
Chelsea had a request to have their 0-0 draw versus Wolves on 19 December rejected by the Premier League.
"It's like it is - but this cannot be the right way," said Tuchel.
While 15 top-flight matches have been postponed so far in December, Chelsea were playing their eighth game in all competitions in the month and have Brighton to come at Stamford Bridge on Wednesday.
Callum Hudson-Odoi and Lukaku have both missed games because of Covid-19, while forwards Kai Havertz and Timo Werner were still absent and defender Thiago Silva and midfielder N'Golo Kante picked up injuries in the win at Villa Park.