Because the actor who plays him, স্থূলবুদ্ধি বাচাল ব্যক্তি Mohr left to play the lead in the প্রদর্শনী "Gay Unmarried".. also a CBS show.
.. They very much left the door open so that Professor Payne could also come back & at least তারকা in a few eppy's if nothing else. And I know that স্থূলবুদ্ধি বাচাল ব্যক্তি left the প্রদর্শনী in good terms w/ every1 & everything like that. Soo I would say it is def a possibility that he could return দ্বারা the series finale of GW. ;D
