Europa League clash with Real Betis. The Hoops will make an emotional return to Seville - where they broght 80,000 fans to the 2003 UEFA Cup Final loss to Porto - for the opening game of the Europa League group stages when they face the former Manchester City manager's current side.
Betis lost 1-0 to Real Madrid - one of Pellegrini's former clubs - at the weekend in La Liga and the 67-year-old, who won the English title with Manchester City in 2014, is looking forward to facing Celtic in the group stage, along with Ferencvaros and Bayer Leverkusen.
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