Chelsea boss Maurizio Sarri admits he is sweating over the severity of the knee injury picked up by Alvaro Morata during Thursday’s Europa League draw with Vidi.

The Spain international was forced off with the problem towards the end of the first half at the Groupama Arena and he seemed in a large amount of discomfort.

Olivier Giroud came on in Morata’s place and he grabbed an equalising goal for Chelsea to help them secure a 2-2 draw, but the result was irrelevant given the Blues had already progressed as group winners heading into the match.

With a busy fixture schedule over the coming weeks, Chelsea can ill-afford to have players sidelined through injury and Sarri admits he is yet to learn the full extent of Morata’s problem.

“The first impression of the doctor (is) maybe it is not a serious injury,” Sarri said.

“But, of course, with this situation we have to wait and wait until tomorrow I think to see if the situation is serious.”

Sarri conceded it was a difficult match for his side to negotiate considering they had nothing riding on the outcome, but he was pleased with the way they came from behind.

The Italian added: “We made a lot of mistakes from the tactical point of view. I am very happy with the character and with the reaction from the second goal.”

Chelsea now head into Monday’s draw as one of the favourites at 5.00 for Europa League glory this season.