Legend Ray Parlour says Arsenal need at least three players to be competitive next season.
The Gunners have been linked with a number of offensive players this summer including Liverpool's Raheem Sterling but the 42-year-old believes the youngster is not what boss Arsene Wenger should go after.
"I'd rather concentrate on central midfield, centre-back and maybe a goalkeeper if I was manager," Parlour told Sky Sports.
"I always look down the spine of the team, which is so important. Look at Chelsea: Terry, Cahill, Fabregas, Matic, Costa. If you're going to win leagues you've got to have that base.
"Raheem Sterling, as a 20-year-old - people are always looking at potential and how good could he be. But you couldn't have Alex Oxlade-Chamberlain, Theo Walcott and Sterling – I don't think that would work.
"The big question is who? Jackson Martinez at Porto is decent. Edinson Cavani has always been mentioned. Karim Benzema may be available with the way Real Madrid might change their system with Gareth Bale playing down the middle.
"If there's that sort of calibre player available, I think Wenger will definitely be in the market for them.
"It's just those two or three players who could really change things. I know they're hard to find, but if you could get a Tony Adams – a leader at the back – a 'keeper and a central midfielder.
"I think Koscielny would be the ideal player, but it's probably not in his nature to be a leader.
"If Wenger can find it and he was the right money, he would get it. But who do you take a gamble with and who do you think can do the job? Arsene Wenger always looks at the mentality and attitude of players when he's bought them.
"It's just finding the right player really. That would be a really important signing – if they could make one like that it could be the difference."