Arsenal will complete the signing of Hednesford defender Cohen Bramall in the next 48 hours, according to Sky sources.
The left-back impressed during a short trial at London Colney before Christmas and has been training with the club since then.
Bramall has passed a medical examination and will join on a two-and-a-half-year contract.
Hednesford, who play in the seventh-tier Evo-Stik Northern Premier League, are expected to receive around £40,000 for the 20-year-old.
Arsenal currently have experienced international players Nacho Monreal and Kieran Gibbs competing for the left-back position in their senior side.