Maybe. Still seems very speculative. Its the kind of possibility that the rumour mill could easily turn into an "almost certainty".
This is what I read on that topic. No confirmation at all, but seems to be pretty likely...
But having the same actor also would mess up the character. Knowing you can easily cast somebody else means that continuity isn't really an issue.
After careful casting, saying , O well we won't really see that character again till we-don't-know-when! Kinda a hurts the character continuity.