YES, AS HIS VISA IS STILL ACTIVE TILL JANUARY, HE CAN COME BACK EVEN IF HE HAS ANY OTHER GCC COUNTRY VISA. BUT ONCE HE WILL BE HERE DEFINITELY THE COMPANY WILL ASK AS HOW HE MANAGED TO GET THE VISA BUT THAT IS NOT A PROBLEM. SO YOUR FRIEND CAN COME ANY TIME BEFORE EXPIRY OF THE RP.
THANKS