Four Chelsea players are COVID positive and has been ruled out.
The Blues have been suffering from a major crisis with the likes of Romelu Lukaku, Timo Werner and Callum Hudson-Odoi who all tested positive for COVID.
Ben Chilwell was also ruled out after testing positive this midweek.
Tuchel said to the club’s official website: ‘No more positive results at the moment, but the lottery starts again tomorrow.
‘We’re happy at the moment that Kai Havertz has more than one negative result so he was back in training. Let’s see.
‘Nobody can enter the training crowd without a negative test. We left Kai out [of the Everton game] because he felt unwell. We thought there was a high possibility that he might be positive and did a PCR which was not even needed, in my information, for the match. He was negative on a lateral flow test but we left him out of the squad and had nobody else on the bench left.
‘You can never be sure, tomorrow everything can be different and we have to go on from there. Two o’clock is training, after that we sit in the bus and go to Wolverhampton.
‘Once you have players out for Covid you have them out for 10 days and 10 days in December means a minimum of three matches. This creates some obstacles to overcome.’