Charlton Athletic have reached an agreement with Southampton to extend Dan Seaborne's loan spell at The Valley.
The centre-back initially joined the Addicks on a one-month deal at the beginning of November.
However, his performances are said to have impressed manager Chris Powell, who has seen his side pick up 10 points from a possible 12 with Seaborne on the pitch.
His stay at Charlton will now be assessed on a weekly basis.