Cardinals didn’t tell him no. In fact he had to call them today to cancel his second interview which was scheduled for tomorrow. It’s been said coaches are balking at having to deal with their Prima Dona QB so Arizona’s options may be limited.
That wouldn't be too shocking, his production does not match his attitude and that contract is an albatross if he doesn't perform at MVP levels.
I think another factor is more jobs would be filled and they can't wait for the Cardinals to complete their long process and have other jobs fill up. Vikings DC is a very nice landing spot.