The 28-12 months-antique left-lower back performed 127 games and scored six dreams for Everton after becoming a member of from Barcelona in 2018.
"When Lucas became available we jumped at the possibility to convey him to the club," said Villa manager Gerrard.
"To signal a player of his pedigree and pleasant within the January window is a superb addition to our squad and his arrival excites me and absolutely everyone related to Aston Villa."
Everton stated Digne had joined Villa for an undisclosed charge.
Digne made his disappointment clean at the way he were handled.
"What has passed off and some matters that became said about me inside the closing month has made me very sad," Digne wrote on Instagram.
"But I'll now not enter a battle of words with every body.
"Sometimes it handiest takes one character from outside to damage a beautiful love affair."
Digne will be part of Brazil international Philippe Coutinho, who completed a clinical earlier this week ahead of a mortgage pass from Barcelona.
