BILD says Karius may have been handed his debut by Union Berlin at the weekend but it appears his stay in the German capital is to be short-lived.
Karius was sent on with 20 minutes left against Borussia Monchengladbach on Saturday after No 1 goalkeeper Andreas Luthe clashed with opposition forward Marcus Thuram.
Karius was caught out by Luthe's injury and he was left to frantically change in the stands and go onto the pitch without a proper warm-up.
It was Karius' first action in the Bundesliga since he left Mainz back in 2016.
Need a VPN? Or seeking to switch? Then support Tribal Football by clicking here to sign up with our official partners NordVPN. Not only will you receive the best VPN experience, but also great discounts by signing up via Tribal Football. Thanks for your support!