From an outside perspective, it's true that even without Aviles, they didn't have to pursue Izturis and agree to the terms they did. There were options that weren't Izturis or Aviles. From an insider's perspective though, it's hard to know how confident AA would have been about landing another option. In any case, it's just weird to me that the team was keen to sign Izturis when Aviles had just landed on their lap through the Farrell exodus. I guess they just saw more value in having Rogers+Izturis than Aviles+Gomes and they were wrong about that.
In any case, JaysFans4Life seemed to think that Aviles was obtained after the Izturis signing so at the very least, I thought it was worthwhile to post the actual timeline to clear up any possible confusion. Exactly, how the different moves influenced the thought process for subsequent moves is a discussion that would be impossible to settle but we know that the sum total was a poorly constructed roster.