Djimi Traore joins Pompey
The deal brings an end to a short-lived stay at The Valley for the 26-year-old defender, who only joined Charlton from Liverpool in early August.
Former Charlton head coach Iain Dowie paid the Anfield giants £2m for the Mali international.
But the man who won the Champions League in 2005 has become the second departure of the Alan Pardew era, following back up keeper Andersen out of the club.
It seems Traore will be quickly replaced, with a deal for Man City's left back Ben Thatcher being agreed.