Vincent Kompany acknowledged Bayern Munich's trip to Union Berlin in the Bundesliga will not be easy, as they look to get back to winning ways.

Bayern, who had Joao Palhinha sent off in the first half, suffered a shock 3-2 defeat to struggling Bochum at home last weekend, giving up a 2-0 lead.

The Bavarians got a confidence boost on Tuesday with a 2-0 win over Bayer Leverkusen in the Champions League, giving them an aggregate 5-0 victory and a spot in the last eight, where they will face Italy's Inter.

In the Bundesliga, Bayern are eight points clear of reigning champions Leverkusen, who are in second place despite last week's surprise home loss to Bochum after also giving up a two-goal advantage.

"There are no easy games. We need to win, that's where we start," Kompany told a press conference. 

"Union did very well last time out against Frankfurt and convincingly won. It's very clear what they do and they can always pose a threat.

"Our demand is that we deliver a complete performance and pick up three points. Obviously, that isn't easy in the Bundesliga. That's football."

Bayern's 3-2 defeat to Bochum was just their second Bundesliga loss of the season. It means they have now dropped points in two of their last four league games (D1 L1), as often as they did across their previous 15 league fixtures combined (also D1 L1).

The league leaders have only endured a two-game winless run once this season, across September and October (1-1 against Leverkusen, 3-3 at Eintracht Frankfurt).

Union, in 14th place, have struggled in the league this season but bounced back last week after three straight losses with a 2-1 away win at fourth-placed Frankfurt.

They have won only one of their last nine home league games (D3 L5), but have not had much luck against Bayern in the Bundesliga. Bayern have not lost any of their 11 games against Union in the competition (W8 D3).

Kompany said Union had done well to win at Frankfurt, and was full of praise for a side he expects to throw up some surprises on Saturday.

"They're a team who live for special moments," he added. "They have an interesting way of moving the ball at the start of a phase.

"They're little moments of chaos that can bring energy in particular in home games. They try to defend in a compact way but also have players who aren't just about defending. They can defend but can also apply pressure.

"We're not going there underestimating the opposition. We know their quality and need our best performance. Then there's a chance we can win."

Bayern are on 61 points, with Leverkusen, who travel to Stuttgart on Sunday, on 53, and surprise package Mainz in third place on 44.