The Gunners boss ran the rule over summer signings Laurent Koscielny and Marouane Chamakh during Saturday's opening pre-season friendly at npower League Two outfit Barnet, where youngster Jay Simpson netted a double in a 4-0 win.
Arsenal players who were out in South Africa will join up in Austria, where warm-up matches have been arranged against Sturm Graz and SC Neusiedl.
Wenger, whose contract runs out in the summer of 2011, is determined the Gunners will mount a credible Premier League title shot.
"We finished third last season, so we of course try to improve," said the Gunners boss, whose 'Invincibles' team went through the entire 2003/2004 season unbeaten the last time they finished top.
"Manchester City have now joined in on the big targets, so it will be hard."
Wenger continued: "We have six players coming back to join us on Monday when we go to Austria, and then the hard work starts
"We have some tougher challenges coming up, especially in the Emirates Cup, so those games will give the new signings an opportunity to adapt, but we have to give them some time."