Wenger appears happy with the options he already has, suggesting that full-backs can play out of position and cover centrally if needed next year.
That would be a massive risk and one, which could be avoided if the Frenchman works hard to identify a world class player who can come into the back four over the summer.
“Four is enough. (Mathieu) Debuchy can play there, (Nacho) Monreal can play there, so you can say we are not out to buy a central defender,” said the boss.
“And Gabriel will be a great central defender, believe me.”
There will be pressure on Wenger to spend cash this summer because there always is; Arsenal are one of the huge clubs in the Premier League, with the resources to be competitive in the transfer market.
However, the boss is in a difficult position because he has a settled and experienced central defensive partnership in Per Mertesacker and Laurent Koscielny.
Gabriel arrived last winter and has done well in Premier League football, though he’ll need an extended run of games to become one of the first choice centre backs at the club.
The issue that many fans will have is why Wenger would take that risk to bring in a full-back from a wide position to play centrally, when he can invest in a fourth top quality central defender in the summer.
That would allow the full-backs to stay where they are in those wider roles and leave Arsenal not having to use players in positions they are less familiar with as they go hunting the clean sheets, which will pave the way to the title next season.