Barcelona has been very good in the league so far, they have done a very good job in the league this season, from a performance point of view we think this is good enough, and of course they have to focus on forming a squad that is much more in advance, wanting to win the UCL can be said to be a target of all clubs, if they can show a better performance to win the UCL they must be prepared and arrange as well, considering that the rivals they will face are very tough and consistent in controlling their club's performance.
Xavi and Barcelona are not going to win the Champions League in such a short amount of time, but I'm sure Xavi and Barcelona will work hard to surpass what they've done this season. Barcelona is the best La Liga team this season, so they have to be strong enough and be able to compete in Europe next season.
Over time Xavi and Barcelona may return to the Champions League final, but as long as their finances are bad their efforts to get to the final will be very difficult. Some of the current players are good, but the performance of the team will not be the same every season so changes and improvements are needed.