Barcelona are in the unusual position of having drawn their last three matches as they prepare for Saturday's home La Liga game against Real Sociedad and Pep Guardiola's unwillingness to commit to a new contract is not helping settle jangled nerves.

The spectacularly successful 41-year-old coach prefers to renew his deal with the Spanish and European champions on an annual basis and as the season has slipped by mutterings about the possibility of him leaving in June have grown in volume.

Guardiola waited until February 8 last year before inking a new deal and went on to capture a third successive La Liga title and a second Champions League crown, as well as the Spanish and European Super Cups and the Club World Cup.

"The sooner the better," Rosell said on Tuesday when quizzed about the issue.

"That would always be a massive boost, it would be great," he added.

This season, Guardiola faces perhaps his stiffest test from Real Madrid, who have been honed into a fearsome attacking force by Portuguese Jose Mourinho, an assistant coach at Barca when Guardiola was a player.

Real, who play at city rivals Getafe on Saturday, have a seven-point lead over Barca with just over half the season played and are fiercely determined to end their arch-rivals' domestic and European domination.

Having knocked Real out of the King's Cup last week, Guardiola refuses to give up on the league title, although he admits Barca are "almost at the point of no return" after Saturday's 0-0 draw at Villarreal.

They clung on to draw 2-2 with Mourinho's side in their Cup quarter-final second leg, which sent them through 4-3 on aggregate, and were held to a 1-1 stalemate at Valencia in Wednesday's Cup semi-final first leg.

It was the first time since March 2009 Guardiola's side had been restricted to three consecutive draws.

"A lot of people believe the league is already lost, but they will not convince me," he said on Tuesday.

"We've done well for a long, long, long time, and you don't know how hard that is.

"The players must put in the effort to continue. They will regret it if they don't. We cannot give up yet."

Third-placed Valencia have slipped nine points behind Barca ahead of their game on Sunday at a resurgent Atletico Madrid, who appear to have put an erratic campaign behind them since the appointment of former Argentina captain Diego Simeone as coach late last year and have climbed to seventh.

Levante, Valencia's city neighbours and the season's surprise packages, are five points further back in fourth and host troubled Racing Santander on Saturday.