Arsenal v Porto preview

Wenger: Porto test

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Arsenal must overturn a one-goal deficit when they welcome Porto to Emirates Stadium on Tuesday night.

The Gunners went down 2-1 at Estadio do Dragao in the first leg of their last-16 UEFA Champions League clash.

The scoreline could have been much higher as both sides had chances to add to their total three weeks ago.

As it was, Arsenal boss Arsene Wenger was left fuming following Porto's controversial winner from a quick free-kick after goalkeeper Lukasz Fabianski had handled Sol Campbell's backpass.

And history is against the Gunners, who have not overturned a first-leg deficit in European competition since their UEFA Cup tie against Hajduk Split in 1978, having gone out of the Champions League to Bayern Munich (2004/05), PSV Eindhoven (2006/07) and Manchester United last season after losing away.

But the Gunners boss still believes his side have the edge heading into the tie after Campbell's crucial away goal, which Wenger describes as a "massive advantage".

Tricky game

He said: "I do not think anyone will be complacent. We know it will be a tricky game, but we believe we can do it.

"We have good confidence, we are in a good position, so let's go for it."

Porto have lost all six of their trips to London - including a 1-0 reverse at Chelsea in this season's group stage - and went down 4-0 to the Gunners during September 2008.

But coach Jesualdo Ferreira believes Tuesday's encounter will be different.

He said: "We know what our qualities are and we are confident. This will be a very difficult match, but we have the weapons which make it tough for Arsenal.

"You need to be able to adapt tactically, but we are always playing to win. We will try to do the same what we did at Estadio do Dragao."

Team news

Influential Arsenal captain Cesc Fabregas is out of the clash after he suffered a recurrence of a hamstring problem during the 3-1 Premier League victory over Burnley on Saturday, limping off after he had fired his team ahead.

France international Samir Nasri is likely to be moved into the centre alongside Cameroon international Alex Song, while Campbell may also return after missing the Burnley game with a groin injury.

Key playmaker Andrey Arshavin returned as a substitute and scored in the Burnley game and should feature again, as could Denilson, who also played against the Clarets after missing the Stoke trip with a calf complaint, while Abou Diaby played following a knee problem.

But Robin van Persie, William Gallas, Kieran Gibbs and Johan Djourou remain absent.

For Porto, Nuno, Jorge Fucile, Rolando, Raul Meireles and Brazil international Hulk are back in the squad to face the Gunners.

The Portuguese outfit have plenty of options in attack, with Falcao, Marian Gonzalez, Cristian Rodriguez and Hulk all pressing to be included in their three-man frontline.