Barcelona should just forget about progressing to the next round in the champions league because Inter Milan is going to win their next match at home against Viktoria Plzen which is too sure.
The equalizer of Lewandowski is not enough for Barcelona. That goal only delays the day Barcelona will officially be delegated to Europa League. In addition, the outstanding performance of Inter Milan shows that they will likely to win against Plzen. I don't think Plzen will be able to have points from Inter Milan that means Barcelona will know where they will play after a next match day.
Is it likely that Inter will lose to Plzen? Sorry, but there is absolutely no chance.
It is necessary for Inter Milan to go winless in their remaining games, and for Barcelona to win all of their remaining matches to qualify for the knockout stages. This isn't going to happen, Europa is loading! Let's just prepare ourselves for the Europa League even though it isn't official yet. Let Barcelona drop to the Europa League and organize themselves there until they are ready to play in the Champions League.