Central defender Manny Parry put pen-to-paper on a one-year deal to join Dover in June.
The 23-year-old played 23 times for Braintree Town last season, including in Dover’s 2-1 win in Essex in April.
The 6ft 4in Parry, who joined the Iron from Margate last November, started his career in the youth ranks at Millwall before moving on to Stoke City in 2011.
He later spent time on loan at Conference clubs Maidenhead United, Nuneaton Town, Weston-super-Mare and Worcester City before joining Grays Athletic.
Parry then moved to Maidstone United where he made 46 league and cup appearances during the Stones 2015/16 National League South promotion-winning campaign.
He was released in June 2016 and stayed in Kent with Margate.