Borussia Dortmund vs Olympiakos Piraeus preview - Zorc prepares for crucial game

Borussia Dortmund sporting director Michael Zorc has described his side's Champions League clash with Olympiacos as "the most important game of the season".

The Bundesliga team are bottom of Group F with just one point after three games following a draw in their opening match against Arsenal and subsequent defeats by Marseille and Tuesday's opponents.

Realistically Dortmund need to win to stand any chance of remaining in contention for a place in the next round, something Zorc is aware of.

He told ruhrnachrichten.de: "This is the most important game of the season.

"This game is our last chance."

Dortmund are third in the Bundesliga, with four wins from their five home games, and coach Jurgen Klopp wants his side to transfer their domestic form on to the European stage.

He told Bild: "I still do not understand why we have not reached the levels of the Bundesliga in the Champions League.

"We will prove that we can also compete in Europe - and that is only with a win.

"I feel that the team will give it everything and prove themselves to all the critics."

Midfielder Sven Bender is set to miss the game after suffering a foot injury.

Olympiacos have three points from their victory against Tuesday's hosts and sit three behind Marseille.

Defender Jose Holebas, once of 1860 Munich, expects to face constant attack from Dortmund and said: "Our advantage is that Dortmund is under pressure.

"I expect a total battle because Dortmund will play non-stop attack."