The German club have hit back at reports that they deliberately tried to prevent the Italian outfit from finalising a deal for the winger
Eintracht Frankfurt have accused Lazio of forgetting the letter 'K' in their transfer offer for Filip Kostic, while also denying sending a fake email address during negotiations between the two clubs.
Goal reported back in June that Lazio had joined Inter and Roma in the race to sign Kostic, who had been made available for a permanent transfer at a price of €25 million (£21m/$30m).
Lazio continued pushing for the Serbia international's signature right up until the August 31 deadline, but it has been reported that their final bid was never received by Eintracht.