The odds of acceptance are pretty good, although not entirely so.

I have a large brood of cats; and as I brought them in one by one through
the years, the original cat--a calico--has refused to be part of the
society.  She remains stand-offish to this day.  However, the others quickly
warmed up to each newcomer--particularly if it was a kitten.

Put them together with a watchful eye and let the older cat assert its
dominance.  The kitten is accustomed to being submissive to a larger, older
cat and will be neither offended nor particularly daunted.   Likely, its
playful and experimentive nature will make it a handful for the older cat.

--Gene Royer