Darius Henderson has completed a move from Millwall to Nottingham Forest for an undisclosed fee.
The 31-year-old striker has signed a short-term contract at the City Ground until the end of the season.
"We are delighted to have brought a player of Darius's experience to the club," chairman Fawaz Al Hasawi told Forest's official website.
"He knows all about the Championship and has also played at the highest level in England as well and I've no doubts he will be a great addition to Alex McLeish's squad."
Henderson is expected to make his debut in Saturday's league clash against former club Watford at the City Ground.