Chelsea 's "unpredictability" makes them tricky opponents but Bayern Munich will still head back to Germany with the advantage after tonight's clash, according to Dimitar Berbatov.
The former Manchester United marksman is confident the Bundesliga league leaders will put their best foot forward in west London after a narrow win at the weekend.
Chelsea warmed up for tonight's Champions League clash in the perfect way by beating Tottenham on Saturday, although Bayern themselves found the north Londoners easy cannon fodder in the group stages.
Frank Lampard's young side have struggled at home, winning one of their three Champions League games at Stamford Bridge this season, and may find the Germans, whom have not lost since December 7, too much to handle.
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"The last week underlined how unpredictable this young Chelsea team are," the Bulgarian told Betfair.
"They were abject in defeat to United then much better when beating Spurs on Saturday. So which Chelsea will turn up when they face Bayern Munich at Stamford Bridge on Tuesday night?
"I have no idea and, as its Bayern, I’m reminded of Gary Lineker’s old saying: 'Football is a simple game. Twenty-two men chase a ball for 90 minutes and at the end, the Germans always win.'
"Bayern are a tough team to play against, as Tottenham learned in their 7-2 defeat to them in the Group Stage, and you can always expect Bayern to raise their game for a tie like this one.
"I can see the Germans taking a narrow victory back to Bavaria."
This is the first Champions League meeting between the pair since that iconic night at the Allianz Arena in 2012 when Chelsea were crowned European champions.
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Since then Bayern have won the competition and made the last four on four occasions to underline their European pedigree.
Robert Lewandowski will also be licking his lips at the prospect of facing a Chelsea defence that have kept just five home clean sheets all year.
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