Barca must overcome a 2-0 deficit to progress.
â€śThe best way to lift ourselves is to think about what weâ€™ve got left. We have to think positively. Things arenâ€™t going the way we want them to, and there are things we have to improve. But the only way to improve is by working hard and having a positive, winning mentality,â€ť said Mascherano.
"We have to take a step forward â€¦ the positive thing is that itâ€™s in our hands and football is always better when youâ€™re not depending on other results going your way."