Chelsea were held to a 1-1 draw with RB Salzburg at Stamford Bridge on Wednesday.
It was a game Chelsea should have won, but the Blues are now under pressure to qualify from the group after getting a point from two games.
According to Chelsea goalkeeper Kepa Arrizabalaga, the team did everything to win the match but was left frustrated with just getting a single point.
“It’s a Champions League game at home so we expect to win,” Kepa said.
“The last few days have been a little bit crazy and we are sad obviously because we achieved big things together with Thomas and we had very good times with him.
“Now there is a new start with Graham and some different ideas. We wanted to start strong and be in front, like what happened in the game, and then to control and use their frustrations to go higher and press.
“I thought we did that. We had chances to score more goals and we did a lot of positive things. There is frustration a little bit because we drew when we needed these points but we are improving and it’s just the beginning.”