Academy graduate Marshall Wratten has committed his future to the club by extending his contract until the end of the 2021 season.
The 20-year-old left-winger, who can also play at left-back, signed an initial one-year deal ahead of the 2019/20 season after impressing for Dover’s Academy side.
He made his senior debut as a second half substitute in our Emirates FA Cup first round defeat at Bury in November 2018.
Marshall spent most of last season on loan at Isthmian South East club Whitstable Town.