GUUS HIDDINK has put the nation on goal alert after predicting Chelsea and Barcelona could serve up another feast of football in the first leg of their Champions League semi-final at the Nou Camp tonight.

Chelsea and Liverpool produced one of the most exhilarating matches seen in the tournament when they drew 4-4 in the quarter-final, second leg at Stamford Bridge a fortnight ago.

Chelsea secured their semi-final spot 7-5 on aggregate after fighting back from two goals down at the interval and Hiddink hinted there could be more exciting times ahead against Barca.

"I think both teams have a style to attack when they can," declared Hiddink. "Barcelona like to attack and Chelsea are not a team who have the strategy to sit back and wait until it happens.

"The team have shown a lot of initiatives and that's why I think it is more or less an open clash, with two teams who like to go forward."

After their 4-4 draw with Liverpool, Hiddink knows his side cannot afford to start in a sluggish fashion against Barcelona.

He continued: "It is the whole squad's responsibility to make sure we have a concentrated start tonight.

"I have seen Barcelona play many times in the last weeks and also before.

"For a long time I have been a Barcelona admirer and an admirer of their philosophy.

"The players not only play for themselves but also a great club and they know it, in a side which is very attacking and attractive - it makes it typical of the Barca style."

Meantime, Barcelona coach Pep Guardiola wants to see his players dominate a "physical" Chelsea side.

"They are a very strong team physically and have a lot of experience," he said.

"From a physical point of view, they are much more powerful than us, so my players will have to dominate."

Guardiola is particularly concerned by the threat Hiddink's side pose from set-pieces.

"People like (Branislav) Ivanovic, (John) Terry, (Michael) Ballack and (Didier) Drogba are strong in the air, so the less free-kicks and corners we give away the better - because they are better than us in that respect," he said.

After tonight's first leg, the two sides meet again in London on May 6, and Guardiola believes the second match will decide which team progresses to the final in Rome later next month.

"It will be decided in London and we won't be relaxed, whatever the result tonight," he said.

Guardiola was part of the Barcelona side that overcame a 3-1 defeat at Stamford Bridge with a stunning 5-1 win at the Nou Camp in 2000.

That success - which saw the Catalans advance to the semis, where they were then beaten by Valencia - was inspired by Luis Figo.

"We played well that night and Figo was immense," Guardiola said. "But we have players like him who can inspire us this time."