Charlton have taken Manchester United's American left-back Jonathan Spector on loan for the 2005-2006 season.
Spector will join Charlton for the coming season
The 20-year-old made eight first team appearances for United last term, his first Premiership start coming against Blackburn in August.
But he has found himself behind Gabriel Heinze, John O'Shea, Phil Neville and Quinton Fortune in the pecking order for a place in the team.
"It's a huge opportunity. He's very excited," said agent Steve Kelly.