Rangers icon Brian Laudrup believes his old side can stun inconsistent Borussia Dortmund, as long as they try to get at their defence.
Giovanni van Bronckhorst's side face a daunting trip to the Westfalenstadion for the first leg of their Europa League play-off round against one of the favourites for the competition.
The hosts will be favourites for the tie but one Rangers legend has been watching them closely and believes there are some big weaknesses his old side can exploit.
Laudrup wrote in his Daily Mail column: "Their biggest issue is consistency.
"They are a real Jekyll and Hyde team. One week they lose 5-2 at home to Bayer Leverkusen. The next, they go away and beat a good Union Berlin side 3-0 with some top-class football.
"They also went out of the German Cup to a second-division team in St Pauli. Finding a steady level of performance has been almost impossible.
"That gives Rangers hope. It's still going to be an absolutely massive task over two legs - make no mistake - but I certainly wouldn't write off the Ibrox side. Particularly if the 'wrong' Dortmund turn up."
Marco Rose's side can be tremendous going forward, even without superstar Erling Haaland in the team.
But Laudrup doesn't think Van Bronckhorst should be sitting back to try and contain Dortmund, as he insists they can be got at down the other end.
The Rangers legend continued: "Going forward, they can be tremendous at times. World-class, really. They have so many different players who can create and score.
"But they play a high-risk game.
"And they always make mistakes in matches. I don't feel their work rate is as good without the ball, so those are the moments when you can really hurt them. Leverkusen did that superbly with their counter-attacking pace ten days ago, while set-pieces are another area of vulnerability.
"Dortmund have only had three clean sheets in the Bundesliga this season, which I find amazing. You will get chances against them if you can capitalise on their instability when they lose possession. I'm sure those are the sequences of play Van Bronckhorst would love to see, with Rangers being able to drive at their defence.
"Mats Hummels and Manuel Akanji are very good centre-backs, no question about that. Hummels, in particular, is highly skilled and has had an excellent career. But he's never been quick. And he's 33 now.
"I do think you can gain an advantage if you get at him and isolate him. Part of that is because I'm not sure the balance of Dortmund's central midfield actually helps Hummels at times.
"I saw Rose pinpoint Alfredo Morelos and Ryan Kent as two Rangers players for whom he has particular respect. He'll know they could cause his team all sorts of problems if given the chance.
"At right-back for Dortmund, Thomas Meunier has had a lot of criticism. The Belgian makes mistakes with his passing. Critics in Germany question whether he has the quality to fit into the style of play.
You could see a key clash within the game between Meunier - if passed fit after missing out at the weekend - and Kent. That might be critical. If Kent can build upon his recent improved form, he may be able to exploit that area for Rangers."
