The Gunners have already lost important players in the summer, and the departure of Cesc Fabregas means that Wenger will have to spend big money in the transfer market. Also, Samir Nasri could also leave in the coming weeks which further adds to the pressure of the manager.
Wenger will need to make crucial decisions in the transfer market, and though the win against Udinese was important, it also showed the lack of depth in the squad, so Arsenal need to bring in players who can create opportunities for the Gunners.
They have also been hit by injuries early in the season with Kieran Gibbs, Johan Djourou and Jack Wilshere all injured in recent weeks.
The long serving French tactician is under serious pressure to make some important signings in the summer and could spend big money in the transfer window due to the departures of key players.
Fabregas was Arsenal's best player until he left the club, but Wenger will hope that the emergence of Aaron Ramsey along with new signings can help Arsenal finally end their trophy drought.