It depends on which timeframe you're thinking on. Long term it's inevitable if Russia can't stop us.

Short term it would be possible if political leaders actively pushed for it.

But the order in which events unfold is paramount.

Western European powers would want Transnistria integrated into Moldova to remove it as a threat for Ukraine. 

But if that happens and Moldova joins the EU then reunification would be pushed back 15-20 years.

Another scenario would imply Moldova giving up Transnistria and voting on reunification before a ceasefire.
In which case Russia would push Transnistria to join Romania to avoid Ukraine invading and annexing it.

If after a ceasefire, then Transnistria would remain a Russian enclave between Romania and Ukraine.

Georgescu would probably either force it economically, because Moldova is isolated energetically, or negotiate it with Trump and Putin.