Transfer Sponsorship after final Exit

Dear Sir,

I need your advice, I am currently working as an admin assistant, a supplied manpower. This is the story. I Am hired by Company A on July 2010. They supplied me to company B. after 2 years on July 2012, I renewed my contract for another 2 years.(Did not signed anything for the 2nd contract). On July 2014 my contract will be completed (4 years), I filed an exit and i guess my employer will agree to that. But the company B where I was supplied was planning to re hire me but they require me to return under the sponsorship of company C.

Question: Is there any right for the the company A to bother or to file a case if i go back to KSA under the sponsorship of company C supplied to company B?

Thanks and regards