Keita scored his first goal for the team on 16 November 2008, in a 2–0 win at Recreativo de Huelva. The following week he added another, in a 1–1 home draw to Getafe CF; he finished his first season at the Camp Nou with 46 official appearances as "Barça" won the treble, and played 20 minutes in the Champions League final, taking the place of Thierry Henry in the 2–0 triumph against Manchester United.