That’s according to Gerry Francis who says the Frenchman must splash the cash before the transfer window slams shut.
Alex Oxlade-Chamberlain is on the cusp of leaving the club for Liverpool.
Meanwhile Alexis Sanchez is the subject of serious transfer interest from Pep Guardiola’s Manchester City.
With key players looking to pack their bags, Francis has urged Wenger to get his cheque book out.
“I think Arsene Wenger in the next 36 hours needs to do something,” Francis said on Sky Sports.
“He needs to do more, looking at their players and their body language the other day.
“I feel he needs to make some changes if he’s going to have any sort of a season where people are not going to be questioning him.
“He needs to make some real big decisions in the next 36 hours.”
The Gunners have only signed two players so far this summer.
Sead Kolasinac and Alexandre Lacazette were drafted in from Schalke and Lyon respectively.
Wenger’s Arsenal side have had a rocky start to the 2017/18 season.
They defeated Leicester 4-3 in a thrilling Premier League curtain raiser.
But they followed that up with a 1-0 defeat to Stoke at the Bet365 Stadium and a crushing 4-0 loss to Liverpool at Anfield on Sunday.
