Pep Guardiola has warned Barcelona that a mistake against Almeria could be fatal, given their opponents guile and speed.

"If we don't play well in a positional sense, Almeria will kill us with [Pablo] Piatti and [Albert] Crusat in attack," Guardiola reasoned to Sport.

"What's more, they have the fifth best defensive record in the league.

"They are very quick and if we do not organise ourselves well and leave space in behind us, they will beat us.

"Games before and after international matches are very dangerous," he continued.

"There is a tendency to get careless... This is the biggest danger, even more so than Almeria's qualities."

Barcelona are currently second in the Primera Liga standings with only goal difference sperating them from league leaders and arch rivals Real Madrid.