in any case, if you want to work again in qatar, you need to get a NOC from your present employer. Else you would be barred for 2 years from working in qatar... you can come back to qatar again on a new work visa only after 2 years if you dont get a NOC.. how ever u can visit qatar on arrival visa if you become a GCC resident( but with certain visa categories). Hope this clears your doubt...
in any case, if you want to work again in qatar, you need to get a NOC from your present employer. Else you would be barred for 2 years from working in qatar... you can come back to qatar again on a new work visa only after 2 years if you dont get a NOC.. how ever u can visit qatar on arrival visa if you become a GCC resident( but with certain visa categories). Hope this clears your doubt...