The English playmaker was in visible discomfort when being substituted against Fulham, but Thomas Tuchel does not think that his suspected back injury is a serious one, and he should be fine to feature from the off.
The Blues will make do without Mateo Kovacic after he suffered a setback in his recovery from a thigh problem, but he may be Chelsea's only absentee as Tuchel is optimistic over Antonio Rudiger's availability for the second leg.
Rudiger's expected return should see the German - who assisted Christian Pulisic in the first leg - line up alongside Thiago Silva and Andreas Christensen, as Cesar Azpilicueta starts on the right-hand side.
Hakim Ziyech is expected to drop out for Pulisic, while Kai Havertz is battling with Timo Werner for the chance to spearhead the attack, and the former Bayer Leverkusen man may be given the nod after scoring a brace against Fulham.
Chelsea possible starting lineup:
Mendy; Silva, Rudiger, Christensen; Azpilicueta, Jorginho, Kante, Chilwell; Mount, Pulisic; Havertz
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