Rangers will be the biggest challenge Jagiellonia Bialystok have ever faced in Europe, manager Adrian Siemieniec predicted ahead of this week's showdown.
Derek McInnes' side travel to Poland for the Europa League first leg after being held by Dundee United to a 1-1 draw at Tannadice in the league opener.
Jagiellonia Bialystok played at the same time and made it two wins out of two in the Polish league after defeating Motor Lublin 2-1.
However, boss Siemieniec reckons playing Rangers will be the toughest task they have faced in Europe.
He said: "The scale of the challenge in the Europa League is very high considering the calibre of the opponent.
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"It will be our biggest-ever challenge to try and overcome a team like Rangers over the two legs.
"But congratulations to my players for securing another positive result.
"It would have been easy for us to fold after Motor Lublin equalised, but the individual quality of my players meant we capitalised on the one chance we got after they scored and then defended brilliantly."
And Siemieniec was pleased at the debut of their record signing after they splashed out £750,000 to land Danish star Anders Klynge from Bodo/Glimt and he came on as a sub.
He said: "He's physically ready - the Norwegian league has already started and he's been working with the team for the entire season.
"But it's not easy joining a team full of players who know each other and communicate. You need time to find a common language, to get to know each other well. It's also an adaptation process."
