Salary delay as a reason for filing a labor case and joining a new employer

Hi,

I am employed in Abu Dhabi. My employer owes me 2.5 months of salary as he didn't pay me on time. I have a job offer from another employer wherein I have to join immediately.

They will apply for my new visa. If I request to cancel my current visa and get a new visa from the new employer, can  I still sue my previous employer after 1 or 2 months?

Could you please tell me my options in this?

I have to obtain a new visa from the employer and some international travel requirements are there in my employment.