Gayle, 20, progressed through the Daggers academy and has enjoyed loan spells with non-league sides Grays and Histon.
Daggers boss Wayne Burnett has been impressed by Gayle's pre-season performances and took the decision to offer him an extension.
"I am pleased that Ian has re-signed for us," Burnett told the club's official website.
"He has come in for pre-season training and worked extremely hard. He's a player that still has a lot to learn and I hope he can carry on progressing at the football club."
- Sports & Recreation
- Wayne Burnett