Barcelona midfielder Sergi Busquets says they're worthy champions.

Barca were confirmed champions of Spain on Sunday.

"Last year, we really struggled and we weren't at the level required to be league champions. This year we are on the right track, the first trophy is out of the way and now we have to celebrate it because it's the toughest competition to win as you have to play against all of the teams and be consistent," said Busquets.

"It's the most important one, you're competing right the way through the season, playing against other sides at their grounds and at home. The Champions League is more prestigious but the league's more important."