Ibn ʿArabi (26 July 1165 – 16 November 1240), full name Abū ʿAbd Allāh Muḥammad ibn ʿAlī ibn Muḥammad ibnʿArabī al-Ḥātimī aṭ-Ṭāʾī, was born in southeast Spain. An Andalusian Muslim scholar, mystic, poet, and philosopher whose works have grown to be very influential beyond the Muslim world. He is author of over 800 attributed works, with over 100 of his works surviving in manuscript form.
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.
There are many Sunni scholars by this name. Ibn Al-Arabi Al-Maaliki (Abu Bakr) ( Died 543 Hijri) is a Sunni Shaikh who wrote Al-Awaasim Minal Qawassim العواصم من لقواصم. He was the person who claimed that Imam Husain (AS) by fighting against Yazeed, went against the teachings of his grandfather the Prophet (SAWA). He was clearly away from Ahlul Bayt (AS) and follower of Bani Umayyah who were ruling Andalusia where he was living.
Ibn Arabi (Mohyiddin) (Died 638 Hjri) , the Sufi Sunni scholar, is a different person who wrote Al Fotoohaat Al-Makkiyyah الفتوحات المكية . His books contain right and wrong things as he was not strictly following Ahlul Bayt (AS). He wrote some statements praising Ahlul Bayt (AS) but also wrote praising some enemies of Ahlul Bayt.
We have to be very careful when we read for such persons.