Moenchengladbach's players run during a training session at the Camp Nou stadium in Barcelona on December 5, 2016, on the eve of the UEFA Champions League football match FC Barcelona vs Borussia Monchengladbach. / AFP / JOSEP LAGO (Photo credit should read JOSEP LAGO/AFP/Getty Images)

Moenchengladbach's players run during a training session at the Camp Nou stadium in Barcelona on December 5, 2016, on the eve of the UEFA Champions League football match FC Barcelona vs Borussia Monchengladbach.   / AFP / JOSEP LAGO        (Photo credit should read JOSEP LAGO/AFP/Getty Images)