Inter - Barcelona will be eyed very closely indeed. Inter aren't having good days recently. They have defensive and offensive issues both now. They have another difficult match against Roma before facing Barcelona in the Champions League. If they don't have a good result against Roma too it would demoralize them even more. In any case it isn't easy for them to recover magically in a short time though.
Barcelona have had a very impressive run so far. Maybe they lost to Bayern Munich here but their performance was still decent. Their performance in the La Liga has already been very satisfying. I expect them to show the same performance against Inter too and have the control of the match. They can win this to make up for the Bayern Munich loss.
Pretty much Inter has the 2nd in the standing in Group C in UEFA Champions League and will need to win against Barcelona that recently has lifted up to the ranks while inter has a match against Roma will surely have a difficult time in creating a win against Roma, because it might end up in a draw, while Barcelona having Lewandowski is not a push over the team, they surely have the firepower in winning against Inter,
Inter are right behind Barcelona in the group because of goal difference. They are very unlucky to play against Barcelona two times in a row now. Barcelona can get six points in total from these matches which would be the end for Inter in the Champions League. Inter are already too likely to continue on their way in the Europa League. They need to get one point from one of these matches at least to maintain their chance from a logical and mathematical aspects at the same time.
But it is better to be realistic. Inter won't stand much chance against Barcelona especially in Camp Nou. They might try to defend them better in Italy but it can still end up with a sad result.