Arda Turan scored a hat-trick in Barcelona’s 4-0 victory against Borussia Monchengladbach, with Jurgen Klopp and his Liverpool squad watching. Turkey forward Turan also set up Lionel Messi for the first goal of the dead rubber Champions League match. He then scored a 17-minute second-half hat-trick, as Barcelona underscored their position as Group C winners.