A 1-0 defeat at Nurnberg followed an embarrassing 4-2 reverse to Karlsruhe in the first round of the DFB-Pokal and Fink is to ring the changes on Saturday with new signings Petr Jiracek and Milan Badelj both set to start.
"They have both made a great impression and they are players who set the tone and want possession," said Fink.
"They come into this game without any hang-ups. Of course they will both play."
Fink revealed at the pre-match press conference on Thursday that there will be five new faces in his starting XI compared to the Nurnberg game while two changes of position will also be undertaken.
Jeffrey Bruma will be moved out to right full-back with Heiko Westermann moving back into the centre of the back four.
"He played well there last year and knows the position well," added Fink.
Bremen are likely to be unchanged after starting the season with a 2-1 defeat at Borussia Dortmund which nevertheless showed plenty of promise.
Nigerian striker Joseph Akpala has arrived this week and he could be given his debut.
"We will have to see how ready he is for the starting XI," said coach Thomas Schaaf. "Everybody is fit and healthy."
Bremen will need their strongest team since, as the club's director of sport Klaus Allofs emphasised, "it is all about being the leading force in the north".
"It is not only about three points," he added.