Christian Pulisic had to be replaced by Timo Werner prior to kick-off against Burnley after picking up an injury during warm-up.
Chelsea boss Frank Lampard has given an update on Pulisic’s injury which kept him out of the game against Burnley.
Lampard said: “Yes, he felt a little something in his hamstring.
“He’s frustrated because he’s worked so hard to get fit.
“He’s played three games, we’ve tried to manage him in the week and it’s a small feeling in his hamstring so we’ll have to see how he is over the next 24 hours.”
Lampard added: “Hopefully it’s short term, we’re talking weeks.
“It’s a minor feeling that he had but definitely not right to go into 90 minutes of a game with that.”