Eventhough engaged indifinite contract periode (somebody said this is permanent employee) with 3months probation periode, is it no chance to negotiate?

In the copy of Standard Terms & Condition they gived,

-There is once per year salary review, merital increase, and bonuses depend on performance

-Salary Advance,
Newly recruited employees from ouside qatar may on arrival be granted an advance against slary on application. Such advances will be up to 50% of BS and will be covered in two installments from two salary periods following the employee's arrival in Qatar

How about this??