 During his time in Norway he was linked with a move to English club Leeds United.On 4 January 2007, Koren signed for English Championship club West Bromwich Albion in a Bosman ruling, penning an 18-month contract with a further year's option in the club's favour.He made his debut two days later as a late substitute in the Baggies' 3–1 win over Leeds United in the FA Cup third round.