Tammy Abraham should focus on recovering his ankle injury rather than first-team football.
The England international was sidelined since February after he suffered an ankle injury in the 2-0 win against Newcastle United.
He was expected to feature in the FA Cup quarter-final win over Sheffield United but had to withdraw from training with a twisted ankle.
Tuchel has asked the out-of-favour Chelsea striker to solely focus on recovery at the moment.
“Of course, he needs to be fit, that’s correct,” said Tuchel.
“Then to take it step by step, through good training performances and to fight his way back.
“The way back is maybe for him to be a substitute and to be hungry and full of quality in training.
“These are the next steps, but now is not the moment to worry about the first XI, as he has been out for many games, unfortunately too many games.
“It is absolutely not his fault and he is hungry to come back and he tries all the time.
“He tries all the time, but this is the risk to push the players back as soon as possible.
“It was an accident in training because we thought he would be in the squad on Sunday. So nobody’s fault.
“Now is a kind of restart and we hope he can use the next two weeks to get fit again.”
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