Two former Arsenal teammates faced each other in the Europa League final as Bayer Leverkusen met Atalanta. Granit Xhaka, who departed last summer after a redemption arc which saw him go from villain to fan favourite at the Emirates, was starting for Leverkusen as they continued their hunt for an unbeaten treble. On the other side, flop defender Sead Kolasinac was starting at centre-back for Atalanta, who went into the game as underdogs off the back of a 1-0 defeat to Juventus in the Coppa Italia final, which saw reported Arsenal target Andrea Cambiaso assist the winning goal for Dusan Vlahovic…