By Hamish Mackay Goals from Diego Costa and Kurt Zouma ensured Chelsea came back to beat Olimpija Ljubljana 2-1 after a first half scare. Jose Mourinho's men found themselves behind going in to the break after Nik Kapun put the Slovenian side 1-0 up. But second half goals from Costa and Zouma put the Blues back in charge and Chelsea were comfortable from then on. Branislav Ivanovic thought he had added a third but, after initially awarding it, the referee appeared to change his mind and the goal was chalked off. VIDEO Scroll down to watch Diego Costa's first goal and a Fernando Torres horror miss
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Chelsea come from behind to beat Olimpija Ljubljana 2-1 in Slovenia
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Didier Drogba joined the squad and watched from the bench
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Chelsea named strong lineup including Diego Costa and Cesc Fabregas
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Nik Kapun put the hosts ahead in first half
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Fabregas set up Costa for the equaliser in the second half
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Young defender Kurt Zouma grabbed the winner for Mourinho's side
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Branislav Ivanovic had a goal controversially disallowed
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Fernando Torres missed a clear cut chance to make it 3-1
Speaking after the game, Mourinho said: 'The important thing is to give competition to the players, the best thing was that @placeholder made it difficult.
Olimpija Ljubljana
Olimpija Ljubljana