What can I do if the tenant of my villa makes changes without my consent?

I have a villa in Dubai and the rent contract between us and the tenant stipulates that the tenant can not make any modifications or changes to the villa without the owner’s written consent.

I found that the tenant had made additions that can damage the structure of the villa, also he neglected the swimming pool maintenance and stopped the garden irrigation system for the garden under the pretext that he does not need the swimming pool and the garden.

I spoke with him and he claimed that when he leaves the villa in the future he would repair the damage.

Note that he entered the construction materials from the gate of the complex without taking the approval of the developer.

I sent him a warning through the notary to remove the added structure and repair the damages within a period of thirty days, but he ignored the warning.

The initial estimate of the damage is much more than his deposit with us.

Please advise