It has been seven years since Patrick Vieira's Invincibles lifted the Premier League trophy, with any slim title hopes extinguished in brutal fashion with a 3-1 defeat at Stoke yesterday.

Arsenal's defensive frailties were exposed again at the Britannia Stadium - most notably when an unmarked Kenwyne Jones bundled home Stoke's opener and also for the third goal following an awful clearance from Johan Djourou which fell straight to Jon Walters, the blunder coming moments after Robin van Persie scored his 20th goal of the season to give the visitors brief hope.

Wenger has been urged to bring in experienced heads during the summer, most notably to help shore up the defence, with the likes of Blackburn's Chris Samba and Bolton's Gary Cahill both reported targets.

However, the Arsenal manager insisted now was not the time to talk about what is missing as his team regroup for next weekend's clash with Aston Villa looking to stay ahead of Manchester City in the race for automatic Champions League qualification.

"We have our plans and we know what we will do," said Wenger.

"It is not the best moment to analyse after a disappointing game, but if you analyse all competitions and how we have done, the number of games we have played, then we have done well.

"We have to take a little bit of distance and make the right analysis of the season."

Full-back Bacary Sagna accepts Arsenal need to "be a bit more killer" when they come up against physical teams, but insists those answers can be found on the training pitch and not just necessarily the transfer market.

Wenger - who had to do without first-choice centre-half Thomas Vermaelen for most of the season because of a niggling Achilles injury - accepts things cannot go on the way they have.

"On set-pieces we have been caught and Jones didn't even have to jump to head the ball - that is something to correct," he said.

"It is the easiest thing to correct in the game, but you still must understand the flight of the ball and want to be first and have some experience.

"I feel sometimes we are a bit naive."

Arsenal currently lead Manchester City by five points in the race for automatic Champions League qualification, but the FA Cup finalists could reduce that to just two if they beat Tottenham at Eastlands tomorrow night.

Despite failing to last the distance in the title race, losing the Carling Cup final at Wembley and also suffering early exits from the Champions League to Barcelona and FA Cup at Manchester United, Wenger maintains the campaign has not been a complete failure.

"Many would like to be in the Champions League but it is not enough, certainly, but the season has not been for nothing," he said.

"It could have been a lot more, but you can see it is the toughest league in the world and we were very close, but we have to add what we miss."

As well as looking to bring in some new faces, Wenger could also be, however reluctantly, willing to now let the likes of goalkeeper Manuel Almunia, Denilson, Nicklas Bendtner, Gael Clichy, Andrey Arshavin and Emmanuel Eboue all leave over the summer following a string of frustrating displays when handed a first-team chance.

Even though Wenger has been charged with adding some experienced steel to the spine of the squad, the Arsenal manager continues to be linked with developing young talent.

Borussia Dortmund, however, have rebuffed any suggestions they would be willing to sell teenage midfielder Mario Goetze after the 18-year-old helped them secure the Bundesliga title.