The newly promoted Premier League club are wasting no time in throwing around their financial muscle.
Shortly after signing Rodrigo from Valencia, Leeds confirmed Koch.
And it appears they have beaten Tottenham to the centre-back's signature, according to Goal.
It is claimed Jose Mourinho wanted to bring Koch to the London Stadium club, but Leeds had already pushed through a deal.
Koch may also feel he has greater opportunities to play with Leeds, rather than a Europa League side in Spurs.