What results you need from the person in 6-12 months and what you are ready to offer. Headhunting does not work without a market package.
A list of companies with this experience and the people in them: competitors, adjacent industries, other emirates and countries.
A short personal message or call without the company name. The aim is not to sell the vacancy but to find out whether the person is open to a conversation.
Interviews on real cases, references, licence checks and a practical check on a model where relevant.
The current employer often tries to keep a strong person. Discuss with the candidate in advance what matters to them beyond money.
The candidate serves the notice period in their contract. Stay in touch the whole time: this is the most fragile stage.