Bremen, who lead the Bundesliga after a 3-1 win over Hertha Berlin on Saturday, are two points better off than Barcelona so a point at the Nou Camp will be enough to see the Germans progress while the Spanish champions must win to go through.

"It is a dream for every footballer to play in a game like this," said Brazilian playmaker Diego, a record six million euro signing from FC Porto.

"Two great teams are playing one another at the highest level and neither is the favourite. Barcelona are at home but we only need a point. It will be terrific."

After defeating Chelsea 1-0 in their last match Bremen have heaped the pressure on Barcelona but know that result will count for nothing should they lose in Spain.

"To have ten points after five games in this group is a real success," said Brazilian defender Naldo. "We would have been through in other groups but as it is we still need a point.

"We have not achieved anything yet but I am sure we can come through this test."

It is a huge game for both sides and Bremen sporting director Klaus Allofs believes the Germans will win respect among their peers by eliminating the reigning European champions.

"We wanted to prove ourselves in Europe and want to put the Lyon setback to bed once and for all," said Allofs.

However holding Barcelona and their Brazilian superstar Ronaldinho to a draw on their own patch would be no mean feat.

"I refuse to think of the worst case scenario but I have to recognise that we are still the outsiders," said German international Torsten Frings.

"There are easier tasks in football than getting a point at the Nou Camp."

When the draw was made most people thought Chelsea and Barcelona would make the knockout phase with Bremen missing out and their manager Thomas Schaaf hopes to defy the odds again.

"We are still in with a shout of qualifying in a group everyone thought was already decided when the draw was made," said Schaaf.

"We have done so well and getting through in Barcelona would be the icing on the cake for us.

"It will be a full house at the Nou Camp and everyone is waiting for Barcelona to come through but let's just see what happens."

If Bremen qualify it would be the third successive year that they have reached the last 16 knockout stage of Europe's premier club competition.