It's a pretty craptastic offense..... I'm not sure how many years it takes to correct a bad offensive line, but AZ is definitely pushing it.
Maybe if Palmer were more of a scrambler or a guy that succeeds on broken plays he could have some success..... But their issues don't fit his skills very well.
Arizona has the 30th ranked o-line in pass protection. I couldn't find the run stats, but each of their o-lineman (except the RT) has a negative grade on the season.