José Viana Santana
Leigh Griffiths Celtic's Efe Ambrose made two costly errors that let a two-goal lead slip in Thursday's 2-2 draw with Fenerbahce in the Europa League.
Ronny Deila Celtic's defensive weaknesses were acknowledged by manager Ronny Deila after Fenerbahce came from two goals down to draw 2-2 at Celtic Park.
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