The French international, who has represented elite European football clubs such as Paris Saint-Germain, Roma, and Barcelona, becomes our second signing of the January transfer window.
Digne, 28, has won league titles in both France and Spain, represented his country at both World Cup Finals and European Championships.
Head Coach Steven Gerrard said: “When Lucas became available we jumped at the opportunity to bring him to the club.
“To sign a player of his pedigree and quality in the January window is a great addition to our squad and his arrival excites me and everyone associated with Aston Villa.”
