The Poland international is set for an extended run in Jurgen Klopp's starting XI, as his high-profile team-mate faces a prolonged period on the sidelines with a hip problem
The 19-year-old was diagnosed with a hip injury that is set to place him on the treatment table for up to two months, in a blow for the Bundesliga champions.
However, the Poland international, who has been on the periphery of Jurgen Klopp's starting XI for most of the campaign, is ready to seize his opportunity.
"Of course I am sorry that Mario is so badly injured. But for me it feels great to be needed again. It really boosts my confidence," the 26-year-old told Bild.
The Poland winger deputised for his high-profile team-mate at the weekend, scoring two goals in a 5-1 win over Hamburg, and Klopp was eager to praise the ex-Wisla Krakow midfielder.
"He's a very enjoyable footballer. Kuba is back on track," the Signal Iduna Park coach stated.
Borussia Dortmund host Hoffenheim on January 28, as they look to keep up their pursuit of a second successive Bundesliga title.