Manchester United are in Portugal preparing for the second leg clash with Porto. The hosts have the advantage after the dramatic encounter a week earlier which saw United being stalled at home 2-2, giving Porto two precious away goals which could have a significant impact on the final outcome of the tie.

Dimitar Berbatov has travelled with the squad to Portugal, although it's still unclear if he will be in the starting eleven. The Bulgarian, who is nursing an injury and is hoping to be match fit in time, is sharing the fate of Ferdinand who is also racing against time to get fit after a groin injury. Ferdinand was also included in the travelling party.  He missed the first leg at Old Trafford.

Apart from the Bulgarian and Ferdinand, other casualties are also in the squad, Anderson (Anderson Luís de Abreu Oliveira) and full-back Rafael da Silva, so it's still uncertain who Alex Ferguson will choose to partner with Nemanja Vidic in the centre of United's defence on Wednesday, April 15.

Porto have never conceded a defeat on their ground to an English side, but United will have to do just that, unless they can manage a 3-3 draw that will see them through to the semis on away goals. Alternatively, a 2-2 draw will take the match to extra time and potential penalties.

Porto's advantage does not worry Paul Scholes, as he is determined that United can do the business at Estadio do Dragao.

"It's a big game, and there's no doubt it's going to be difficult," he told MUTV. "But all we have to do is win a football match, and with the players we've got we're capable of doing that."

"I think it does boost your confidence when you win games, and going into the big matches we have coming up, I think we needed that little boost against Sunderland."

He was backed by teammate Darren Fletcher, who said before the BBC that:

"The performance could have been better. It’s an uphill task now, but one we’re definitely capable of. At least we know what we have to do now in Porto: we’ve got to go there and win."

"They’re one of the best teams we’ve played this season," Fletcher said. "Their front three are all very dangerous, powerful players."