The Spaniard produced a superb display in the midweek Champions League semi-final first leg against Manchester United at Old Trafford, helping keep the score down to just 1-0.

Almunia joined the Gunners from Celta Vigo in July 2004, and so under residency laws would soon be eligible to apply to become a naturalised British citizen.

Given the 31-year-old has yet to be called up into the Spain national team, there remains genuine possibility Almunia would, under FIFA regulations, be available for selection to England coach Fabio Capello in time for the build-up to the 2010 World Cup.

However, the issue continues to draw controversy, with both former England keepers Peter Shilton and Ray Clemence voicing their concerns.

Nevertheless, there are plenty of precedents.

Arsenal's Brazil-born striker Eduardo is a regular for Croatia having moved there when he was a teenager.

Manchester United and England midfielder Owen Hargreaves was born in Canada.

And Marcel Desailly, born in Ghana, and Zinedine Zidane, of Algerian descent, both helped France win the World Cup in 1998.

In other sports, England cricket captain Kevin Pietersen was born in South Africa and rugby player Riki Flutey is from New Zealand, but is now a British resident.

"There are international rules which have to be respected, but if it is possible legally, why not?" said Wenger.

"Then it is more a choice left to the English Football Association or to Manuel Almunia's desire.

"I believe he is not only good enough, but he is the best."

The Gunners boss added: "It is down to what you expect morally and mentally from a national team.

"I believe at some stage you have to observe just the rules and decide what you want.

"On the English side, for the national team, it is not so much a problem because if the guy decides to become English, he has had to observe and respect the rules like anybody else.

"Why should he then not be qualified to play for the national team?

"It is more a moral problem maybe for Manuel Almunia, because does he consider he has a chance to play in the Spanish national team or not?"

Arsenal head to Portsmouth tomorrow looking to extend a 20-game unbeaten run in the Barclays Premier League.

However, Eduardo is out for around three weeks with a groin problem, and defender Mickael Silvestre is struggling to face his former club again because of a similar problem.

Gael Clichy (back) will miss the Champions League second-leg against United on Tuesday, but leading scorer Robin van Persie (groin) could return next week.

Russian playmaker Andrey Arshavin is available tomorrow having been cup-tied for the Champions League clash as Wenger looks to keep his side fresh and focused on the task at hand.

"We have a good run and want to win the game tomorrow. Tuesday is not in our mind," Wenger insisted.

"Sometimes it is good to rest players, but we will have a strong team out and go there to win the game.

"When you are on a pitch, you focus on the game - you do not have in your mind what you do three days later, that is part of being a top-level footballer."

Wenger added: "We will go into the United game with full belief and with certainty.

"We are happy to say 'let's have a real go at Manchester United for 90 minutes' and I am convinced we will go through."

Arsenal will come up against former captain Sol Campbell tomorrow.

The veteran centre-half, 34, headed to Fratton Park in 2006.

Wenger said: "Sol was at a turning point when he decided to leave us and he seriously considered leaving the country.

"It was his decision to leave, not my decision.

"In fairness to him, it was always difficult when he joined us from Tottenham and never an easy life for him in London.

"But he is a winner and will not accept to be an average player."