I think Barcelona have a great chance to secure the La Liga title. But if Barcelona meet Real Madrid in the knockout stage, I will be a bit worried. Because most of the time Barcelona team fails to fight against Real Madrid.
Xavi being Barcelona coach has a great positive impact in the club. He is really working hard to give Barcelona his best with every thing he has. Being an experienced old player am quit sure he won't let them down and at the end, the whole barca team and the fans will celebrate him.
Barcelona is one of the strong team in La Liga that every other team will have to train critically to compete with them.