Evra has moved to West Ham United on a short-term deal.
Evra made the surprise move to east London on Wednesday, having been without a club since last November.
The 36-year-old, who had his Marseille contract terminated after aiming a kick at one of his own fans before a Europa League game, played under West Ham manager David Moyes at Manchester United.
And when asked how the move come about, Pearce - the West Ham assistant coach - replied: "Well, you know, David brought it up to the group and when he asked the group - when I say the group I'm talking about the coaching staff - everyone saw it as a real positive to bring him to the group.
"You're bringing a top character into the group that who will certainly benefit the squad, I think."
Evra, who is eligible to play for West Ham despite concerns he would be banned, is reported by the Manchester Evening News to have once fallen out with Moyes over a bacon sandwich. However, it would appear that the pair have buried the hatchet.
The Frenchman arrives at West Ham in the midst of Arthur Masuaku's suspension, and is expected to compete with Aaron Cresswell for a first team place over the coming weeks.
Will Evra prove a worthwhile signing for West Ham United?