Borussia Mönchengladbach have entered the race to sign Hertha BSC goalkeeper...
https://hectorsexcellentthoughtss.iamarrows.com/is-a-5m-clause-something-celtic-can-afford-easily
Borussia Mönchengladbach have entered the race to sign Hertha BSC goalkeeper Tjark Ernst, joining Celtic and Feyenoord, according to Bild