The Gunners board member also underlined the importance of Champions League football and insisted that Lukas Poldolski can bring silverware to the Emirates Stadium
Arsenal chief executive Ivan Gazidis has insisted that the club will be looking to add quality, not quantity, to the squad when delving into the transfer market.
Boss Arsene Wenger signed four players near the end of last summer, with Mikel Arteta, Per Mertesacker, Andre Santos and Park-Chu Young all arriving late in the window, in what was perceived by some as 'panic buying'.
But, with the acquisition of Germany international Lukas Poldolski already confirmed, Gazidis insisted that all new arrivals will have something new to offer to the team.
"The key for us is not the volume of signings we might make but that the signings we make add something to the squad,” he told The Guardian.
"That is something Arsene thinks extremely carefully about and for all of the pressure he is placed under, he tends to make good decisions.
"We want to win major competitions. We want to win the Premier League. We want to compete to win the Champions League. That is our ambition. My message to our fans is that we are doing everything in our power to make sure that Arsenal can challenge for trophies next year.
"That is what this summer is about and that is what we are focused on for next year. We have a good team, we have a good young core of players and we need everybody involved to have belief so that we can push forward into next year and make a run at the Premier League trophy and for the Champions League. We believe we can do that."
Gazidis admitted that the assurances of Champions League football have put the club in a healthy position in the transfer market once again.
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For much of last season's campaign, the Gunners were in danger of failing to qualify for the next edition of the tournament, but a 3-2 comeback win over West Brom on the final day secured their entry.
"I think the good thing about this summer is that there is more certainty in terms of our Champions League position," Gazidis continued.
"We have acted early to get the critical signing in Lukas Podolski. Our fans will be able to see him compete at the Euros and see what a very good player he is.
"The great thing about Lukas is that not only can he contribute goals, but he can also play in different positions so you get tremendous versatility and Arsenal class. He is technically a top-class player and that was a good early addition for us."