The 18-year-old spent time in Chelsea’s academy before moving on to Peterborough United in 2023, joining as a scholar.
A key part of the Posh U18 side, he got his first taste of senior football when he was an unused sub in a Carabao Cup clash against Portsmouth at Fratton Park in August 2023.
Holley impressed as a trialist in the Wings’ final pre-season game of the summer against Erith & Belvedere, scoring a sweetly-struck volley to round up the scoring in the 4-2 victory.
He now arrives at Park View Road to bolster Lee Martin’s options in the centre of the park.