Colo-Colo agreed to transfer him to English Championship team West Bromwich Albion for a fee of $3 million in August 2009, but the buying club chose not to proceed with the deal. However, they later resurrected the deal and Jara signed for Albion for a fee of £1.4 million on a three-year contract on 25 August 2009. He scored his first goal for West Brom in a 2–1 away win against Leicester City on 7 November 2009. His second came against Arsenal on 25 September 2010, scoring in a 3–2 victory for West Brom at the Emirates Stadium.