....from Vanarama National League South rivals Ebbsfleet United.
Johnson, 25, is a box-to-box midfielder who joined the Fleet from Bishop`s Stortford last season and went on to make thirty-seven appearances for the current league leaders.
Johnson’s other previous clubs include Rushden & Diamonds, Dover Athletic and Braintree Town.
The midfielder will be available for selection in Saturday`s league clash away at St Albans City and will stay with the Blues until January 6th, meaning he could play up to five times for the Gate, including a double header against Maidstone United over the Christmas period.
Manager Terry Brown has also added Fleet winger Sean Shields (pictured) to his squad for the next month.
The pacey 23-year-old winger spent eight years at the Tottenham Hotspur Academy before bursting onto the non-League scene with St Albans where he netted 21 goals in 100 appearances.
Shields earnt a move to League Two Dagenham & Redbridge in January 2013. However, after an unsuccessful time there he returned to St Albans for a short stint before joining Ebbsfleet in January 2015.
Shields will be available for selection also on Saturday when he returns to his former club St Albans and will stay at Hartsdown Park until the 6th January.
Ryan Day