Dortmund, GERMANY - NOVEMBER 19: Julian Weigl of Borussia Dortmund Christian Pulisic of Borussia Dortmund looks on before the Bandesliga soccer match between BV Borussia Dortmund and FC Bayern Muenchen at the Signal Iduna Park in Dortmund, Germany on November 19, 2016. (Photo by TF-Images/Getty Images)

Real Madrid are interested in signing Borussia Dortmund pair Christian Pulisic and Julian Weigl.

Spanish outlet El Gol are reporting that Real Madrid are prepared to offer Lucas Vazquez and Marcos Llorente to Borussia Dortmund in exchange. Pulisic and Weigl are two of Der BVB’s biggest assets and have the potential to become world class players for years to come.

And Real Madrid are set to test Dortmund’s resolve as they look to bounce back after a disappointing start to the season. The Spanish giants are already right points behind rivals Barcelona in the La Liga title race. Many of their superstars including Cristiano Ronaldo have underperformed.

That could present trouble for Borussia Dortmund as they might have to fend off Real Madrid interest for their star players in January.

Christian Pulisic has been in superb form this season. He finished sixth in the Golden Boy 2017 race last month. And he was the only shining light for Dortmund last weekend, in their embarrassing 3-1 defeat at home to Bayern Munich. The 19-year old American international is considered to be one of the best attacking talents in the world. And Dortmund will be determined to keep him at the club, especially having lost Ousmane Dembele this past summer.

Julian Weigl has yet to cement his place in Peter Bosz’ starting XI. But he only made his return for Dortmund in September after suffering a broken ankle in May. The German’s qualities will be well suited to the Spanish league. But once again, the Black and Yellows will be hoping that Weigl rejects their advances. The 22-year old has also been linked with Manchester City in recent weeks.

While it may please the club chiefs that their players are wanted by one of the biggest clubs in the world. Selling them in January would be a catastrophe for the already struggling Borussia Dortmund.