Chelsea forward Kai Havertz admits he was happy enough with how they played in a 1-0 loss to Borussia Dortmund.

The Blues had more possession, shots, and clear cut chances against the Germans away from home, but now have it all to do in the home leg.

Havertz was impressed with how new signings Joao Felix, Enzo Fernandez and Mykhailo Mudryk performed.

"We have had a lot of new players join in this window and I think you can definitely see us improving and getting that chemistry with one another now," Havertz said.

“This was another step forward, even though we lost.

“The result wasn't what we wanted, but I think we showed some good signs, especially in the second half, and we need to build on that."