It’s entirely possible, according to the man himself:
“I’ll always be able to come back in the alternate world because the Doctor will age like a normal human.”
This would give him a more credible excuse than most of the past Doctors to appear in a future storyline. Short of them pulling the “shorting out the time differential” trick again, we’ve seen most of them die looking a lot younger than we have now which is problematic for their appearances in any anniversary special. The ones whose regenerations haven’t been on screen are Doctors two and eight, the first of which has the obvious shortcoming of being dead.
Strictly speaking, there are ways of rationalising it (it’s Doctor Who, there are ways of rationalising everything). However, if we do see his alternate Earth self, what might be harder to rationalise in the eyes of certain fans will be the lack of Rose:
“Billie probably wouldn’t come back and that’s what would be problematic. It’s always possible but I can’t tell you if there are any plans yet.”
That quote just makes coming back sound more likely than if he’d said “it’s never happening”. It is this writer’s opinion that you could grab Tennant’s Doctor from the period of time when he wandered the universe alone, but that’s just an idle thought.