I have finished 4 yrs on my h1b. For personal reasons, I need to quit my job. I plan to return to the us on f2 visa category. If I were to quit my job now, after 2 yrs sabbatical can I continue to work on h1b filed by a new employer since I will have 2 years out of my 6 yrs on h1b remaining? Can that employer also sponsor my green card at that time?