Fan favourite Rodrigues is Macdonald’s first summer signing.
Raised in Brighton, 20 year-old Rodrigues came through the Whitehawk youth team, and signed his first senior contract with the Hawks in July 2016.
Lucas made 22 appearances for the Hawks last season, before having two successful loan spells at neighbours Burgess Hill in the Bostik Premier League.
The Hawks can also confirm the signing of former youth team captain Harry Shooman from Saltdean United. Shooman, along with Rodrigues, visited the England Schoolboy training camp at Repton in 2015. Harry can play left back, centre back and central midfield.
Further squad news is expected in the coming weeks. For the latest information, follow us on Twitter (@HawksFCOfficial)