Mikael Silvestre has called on Arsenal manager Arsene Wenger to remedy the club's weaknesses after a 'bad season'.
The Gunners have endured a disappointing campaign after recent semi-final exits in the FA Cup and UEFA Champions League.
And on Sunday, Arsenal suffered their heaviest defeat at Emirates Stadium, losing 4-1 to rivals Chelsea, who sealed third place in the process.
Former Manchester United defender Silvestre believes the youthful side still possess much potential but is wary after a frustrating term.
"We have played against top sides and shown weaknesses. It's for the boss to analyse that," said the Frenchman.
"It has been a very bad week - two defeats at home. Now we need to concentrate on the last two games and stay professional to the end. People talk about character - but the character is there.
"These players are going to grow. You learn more when you have defeats like this. But it's a bad season overall. It's disappointing to finish where we have."
Meanwhile, captain Cesc Fabregas is looking to a summer of reflection after admitting the Gunners have been second best against their rivals of late.
Fabregas said: "We have to look at where we can improve and make sure we do that for next season.
"Before the Chelsea match we'd gone 21 games without losing in the league, so we know we are good.
"But when we've played in the semi-finals of the FA Cup and Champions League we haven't been at the level everyone expected us to reach. Our opponents were stronger than us in both of those ties.
"We know it's difficult to keep everyone happy because it's the fourth consecutive season in which we haven't won anything.
"It's frustrating for the fans, who are used to winning things, to see other teams going to finals when we haven't managed it."