The Frenchman starred in his side's 2-0 win over Liverpool at Anfield on Sunday, in which new-boys Lukas Podolski and Santi Cazorla got a goal each.
The 26-year-old has struggled to keep fit for long enough to make any real impact at the Emirates, after joining in 2006 from Auxerre, however if the midfielder can stay injury-free then he has a big part to play in north London this season.
|9/1||Arsenal are 9/1 with Bet365 to win the FA Cup this season
"In our teams, Yaya Toure and me have very similar roles," he told reporters.
"I am not like Alex Song. We have many players who can take his place like Francis Coquelin or Mikel Arteta, who likes to play deep. I want to get forward - that's me.
"I have defensive duties as well so I need to have a good shape defensively and, as soon as we get the ball, go forward."
With Jack Wilshere still sidelined and expected to remain out for at least another month, if Diaby manages to stay fit then he should enjoy a chance to hold a steady place in Wenger's team.
The midfielder, who only managed four substitute appearances in the league last term due to numerous injuries, paid tribute to his manager for the faith and patience shown in him, while he is looking forward to the season ahead.
"I have to thank the manager because I have had tremendous support and as a player it is really important to have that support," he said.
"Support from your team-mates as well - I have to say that during this period, they helped a lot.
"I want to enjoy myself because I love football and to pay back the club, manager and team-mates as well.
"Mentally it was a hard time but I love football. Football is my passion so it doesn't matter what happened, I need to look forward and that is what I have done in this situation."