Expatriates can enter UAE after canceling their residence visa ... Details
Upon completion of six months from the date of departure of your son from the UAE, your child's residence visa will automatically be canceled in the GDRFA register. However, before applying for a visit visa, you should check whether your residence visa has been automatically canceled. If you are informed that your residence visa is not automatically canceled, you must apply for cancellation by paying the applicable fees to GDRFA.
The residence visa for the individual must be automatically canceled on the Register of Residence and Foreigners' Affairs (GDRFA) after the completion of six months from the date of departure of the other person from the UAE.