Bayer Leverkusen manager Sami Hyypia has declared that tonight's trip to Shakhtar Donetsk will offer a stern test of his side's Champions League credentials.
The Bundesliga side secured a dominant 4-0 win over Shakhtar at the BayArena two weeks ago, moving into a strong position to secure qualification for the knockout stages.
Hyypia expects Shakhtar to be much stronger opposition on home turf, but declared that a positive result would go a long way towards booking their place in the last 16.
He told UEFA.com: "We have analysed the first game in Leverkusen. Our victory was fully deserved, but I think that everything will be different here in Donetsk.
"They're a very strong Shakhtar side and now they're playing at home, so I expect it will be a very difficult match for us. Tomorrow we need to have our best and most experienced players on the pitch, as this game is decisive.
"If we will win, we'll be very close to qualifying for the knockout stage. Everyone knows how important this match is for us. We will field the best team possible."
Leverkusen slipped to a disappointing defeat in the Bundesliga last weekend, falling 1-0 at bottom club Eintracht Braunschweig.
