League One club Charlton have signed left-back Lewis Page from West Ham for an undisclosed fee.
Page, 20, has agreed a two-and-a-half-year contract at The Valley.
He made three first-team appearances for West Ham, all in the Europa League, and has previously been on loan at Coventry City and Cambridge United.
"He's quick, likes to get forward and is a good crosser. I really like that in a full-back," Charlton manager Karl Robinson told the club website.
"I got a chance to see him during his loan spell at Coventry and he's a left-back that fits in well with our system.