Borussia Monchengladbach goalkeeper Yann Sommer believes his side need to learn from their 4-0 drubbing at the hands of Manchester City and show an immediate improvement in the next game.
Sommer also conceded that while the 24-hour postponement of the game was not ideal it did not effect their performance on the night.
The German club have been handed a tough draw and will need to show a vast improvement when they host Barcelona in two weeks.
"We simply weren't good enough on the night. We didn't manage to win our challenges or the second balls and we weren't compact enough, but City broke up our play really well. They definitely have all the hallmarks of a Pep Guardiola side.
"We need to learn from this game and play a lot better in the next game," Sommer said in an interview on Mönchengladbach's website.
The keeper asserted that Gladbach were prepared to face city but failed to put their plans into action on the night.
"We knew what was coming our way. We analysed the opposition thoroughly in the lead up to the game, but we didn't react well. We also lacked a bit of courage. But you have to remember that City are a very good team who will probably be challenging for the Champions League this season."
The match had to be postponed for 24 hours due to a waterlogged pitch at the Etihad but Sommer felt this was no excuse.
"Obviously it's not great to have a Champions League away game postponed for 24 hours at such short notice. But no, the postponement of the game didn't have any effect on our performance on the night."