Do not know. (Well she probably is the issue being whether that can be changed around by a "Time Lord".) But the last I read was that Jenna was wishing to leave the series so, if true, it looks probable.
CLARA HAS BEEN REINCARNATED 3 TIMES ALREADY; FIRST SHE WAS 0SWIN 0SWALD, THEN CLARA 0SWIN 0SWALD - B0TH DIED IN THE EPIS0DE THEY APPEARED IN. N0W SHE IS CLARA 0SWALD. S0, IF AT ANY TIME IN THE FUTURE - 0R PAST - JENNA C0LEMAN WISHES T0 RETURN, IT W0ULD BE VERY EASY T0 D0 S0.
BY HE WAY, F0RGIVE THE UPPER CASE, THE LETTER '0' ISN'T W0RKING AND I AM USING ZER0 WHICH L00KS BETTER SURR0UNDED BY UPPER CASE:-)
Clara was fragmented through time on Gallifrey so can appear and reappear at will as she is one of many copies of the original. i hope she is 'dead' I think she's an awful 'companion' and really can't act to save herself .