Eintracht Frankfurt boss Adi Hutter has warned Chelsea not to think the tie is over after the 1-1 draw on Thursday night in Germany.
The Blues will host the German side next Thursday and Hutter insists everything is possible.
Eintracht Frankfurt dumped Inter Milan out of the Europa despite playing a draw at home. They beat Inter Milan away in Italy and Hutter believes they can win at Stamford Bridge.
“Everything is still possible,” said Frankfurt boss Hutter.
“We have to score a goal, that’s a fact, and Chelsea at Stamford Bridge will be the great favourites – that’s for sure.
“But after the goalless draw here against Inter, no one thought we could go to Milan and win.
“That’s how we have to act in London: be confident, brave and courageous. But I’m happy with the performance. Anything is possible.”
Meanwhile, Chelsea boss Maurizio Sarri believes the Blues should have won at Eintracht Frankfurt on Thursday night. According to Sarri, Chelsea were in control of the match for large periods and should have won the game.
“I think that we made a mistake in the first 20 minutes because my feeling was, from the bench, that we were playing only to manage the result for the nil nil,” said Sarri.
“But we are not able to do that. Then we started to play after 25 minutes and played very well until the 85th minute and deserved to win for the number of opportunities.
“We were in control of the match for 70 minutes and should have won. We deserved to win, 1-1 is not so bad away.
“But they are dangerous on the counter-attack if you give them spaces. They are very dangerous at home but they are really very dangerous away.
“I’ve seen Eintracht’s games in the Europa League, and they are dangerous.
“We want to go to the final but we know very well we’ll have to play a very good match next week.”