Borussia Mönchengladbach have entered the race alongside Celtic and Feyenoord...
https://weekly-wiki.win/index.php/Could_the_Unnamed_Bundesliga_Club_Be_a_Bigger_Draw_Than_Gladbach%3F
Borussia Mönchengladbach have entered the race alongside Celtic and Feyenoord to sign Hertha BSC goalkeeper Tjark Ernst, according to Bild