Shi'a scholars do not have a consensus on Ibn 'Arabi. Some consider some of his ideas to be very similar, spiritually/theologically, to some of the Shi'i teachings, and consider him to be a valuable source of ideas or inspiration. Others consider him to be unreliable.
While a few Shi'i scholars have put forward the argument that he was, in fact, Shi'i, I think that this really comes across as forced and is unlikely.
Anyway, my view is that the best thing to do is take what is good and leave the rest. If you find pondering over Ibn 'Arabi beneficial and in agreement with what you know of the truth (from whatever background you are), then take what is good and leave aside that which you are not sure about. And if you do not find it beneficial, then there is no need to read Ibn 'Arabi's works.
This is in general good advice when reading any prolific author, since when someone writes a lot, they are likely to be correct about some things and incorrect about others.