Barcelona can do that but it must be even more consistent compared with real madrid. Barcelona has only a very small point gap to the real madrid. Real madrid can surpass it anytime. Barcelona will have a hard time to win the two title for this season. THere's no guarantee barcelona can win la liga too.
Barcelona didn't have big gap with real madrid even leading the la liga will still give some worries about real madrid to be able to reach or even surpass barcelona. Barcelona may not able to win against manchester united. It seems like that MU is far stronger than before.
Their main striker which is Lewandowski will be absent in their coming match. Lewandowski has been generating goals for Barcelona this season, his absence may cause Barcelona to drop in performance.
I saw that barcelona will not face any problem even though barcelona will be playing the game without lewandowski as its main striker. Barcelona has some players that are ready to be played in the starting line up. Is not it good for another player like depay to show if he still has potential for barcelona? i saw that as an opportunity for him although lewandowski was top scorer in la liga but it doesn't mean if depay was bad. It will be affecting the performance from barcelona as sometimes lewandowski was able to helping the club like saving barcelona when it was losing a few goals and made the match become draw.