The striker missed the Blues’ defeat to Crystal Palace yesterday after limping out of the defeat to Manchester City before the international break.
He suffered a hamstring problem and was expected to miss the next weeks.
But the Spain star has given Antonio Conte a boost by returning to training today.
The summer signing was seen training at Cobham – Chelsea’s HQ – this afternoon as Conte’s side prepared for their Champions League clash with Roma.
Morata has been on fire since arriving from Real Madrid, scoring seven goals in eight appearance.
Chelsea lacked a goal threat without him yesterday with Michy Batshuayi failing to impress.
And Conte will hope he can feature against Roma at Stamford Bridge on Wednesday.
Chelsea were beaten by bottom club Palace at Selhurst Park yesterday and the Italian admits he will struggle to sleep after it.
“It will be very difficult for me to sleep,” he said. “You know I don’t like to lose: imagine when you lose two in a row. My soul is bad.
“We must have the same sensation, me and my players, to change in the next game and be positive.
“(It was) difficult from the start. Our start was poor – you have to start with more personality, otherwise you allow your opponent to take confidence.
“We conceded the first goal, then we were able to come back and, in the last few minutes of the first half, concede another bad goal. Then it was very difficult.”
Chelsea host Roma in the Champions League on Wednesday, when the influential N’Golo Kante will again be missing, along with Victor Moses and potentially Morata.
Before their two latest defeats, the first against City, Chelsea had excelled in winning at Atletico Madrid, and Conte admitted midfielder Kante is difficult to replace.
“To lose a player like Kante is not simple because he’s able to cover a lot of the pitch,” added the 48-year-old Italian. “Our balance was poor.
“Moses is out (on Wednesday) because he’s injured (after being substituted in the first half). I don’t know if his injury is serious. Kante is still out, and I hope to have Morata back.”