Managerless Charlton Athletic have signed winger Louis-Michel Yamfam from Stevenage for an undisclosed fee.
He becomes the club's first signing following relegation from the Championship this season and has agreed a two-year deal.
Yamfam spent the final weeks of the campaign on loan with the Addicks, featuring for the club's Under-18 and Under-21 sides.
The 18-year-old is yet to make his senior debut.
Yamfam is also Charlton's first signing since Steve Head became chief scout at The Valley earlier this week.
The south-east London club have been without a manager since Jose Riga resigned as head coach on 7 May.
Find all the latest football transfers on our dedicated page.