Borussia Dortmund defender Mats Hummels said his club are facing a “catastrophe” after a 2-1 Bundesliga home defeat to rivals Eintracht Frankfurt left their Champions League hopes hanging by a thread on Saturday.

A late winner from Portuguese striker Andre Silva means Dortmund are seven points adrift of Frankfurt and the Champions League qualification places with just seven games to go.

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“Realistically, it’s going to be very difficult to finish in the top four, even if we get six or seven more wins,” Hummels told Sky after his side slumped to a 10th defeat of the season.

He said that missing the top four would be disastrous for Dortmund, who face a fight to hold on to coveted key players such as Erling Braut Haaland and Jadon Sancho in the next transfer window.

“Not qualifying for the Champions League would obviously be a sporting and financial catastrophe, and we are close to that now,” said Hummels.

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Frankfurt took the lead through a freakish own goal on 11 minutes, as Nico Schulz sent a looping header into his own net after a cross from Filip Kostic.

Kevin Trapp denied Haaland with a smart save ten minutes later before Hummels hooked the ball in at a corner to level the scores on the stroke of half time.

Frankfurt’s Stefan Ilsanker had a headed goal ruled out for offside just after the hour-mark, but the guests restored the lead on the counter-attack in the dying minutes, Silva heading in from close range after another Kostic cross.

Frankfurt are four points off third-place Wolfsburg, who beat Cologne 1-0 thanks to a second-half goal from Josip Brekalo.

Dortmund are level on points with Bayer Leverkusen, who eased to a 2-1 win over bottom club Schalke in their first game under new coach Hannes Wolf.

Lucas Alario opened the scoring with a one-touch finish in the first half, before Patrik Schick came off the bench to secure the three points after the break.

Dutch veteran Klaas-Jan Huntelaar grabbed a consolation goal nine minutes from time, scoring for the first time since his surprise return to Schalke in January.

Defeat pushed crisis-hit giants Schalke closer to a first relegation in over three decades,

Two brutal counter-attack goals from Ruben Vargas and Andre Hahn gave Augsburg a 2-1 win over Hoffenheim, despite a brilliant late half-volley from Robert Skov.

In the relegation fight, Mainz’ recent revival was halted by a 1-1 draw at home to fellow strugglers Arminia Bielefeld.

Bielefeld’s Andreas Voglsammer struck 15 minutes from time to cancel out Daniel Brosinski’s penalty and keep second-from-bottom Bielefeld within a point of safety.