Cole testified that his team-mate was only repeating back the slur that Anton Ferdinand mistakenly thought he had used.
Referencing Cole's role in proceedings, Twitter user @CarltonEBanks sent Rio Ferdinand a public message: "looks like Ashley Cole's going to be their choc ice. Then again he's always been a sellout. Shame on him."
The term 'Choc ice' can be used as a racially insensitive slur aimed at black people who are perceived to have betrayed their ethnicity in some way. The tweeter's attack on Cole is particularly unjustified as the England full back appeared as a "reluctant" witness in the trial.
Ferdinand seemingly endorsed the insult, replying: "I hear you fella! Choc ice is classic hahahahahahha!!"
Ferdinand then moved to diffuse the situation by Tweeting about ice cream - "I'm more a cherry brandy man! Used to go for the twisters too back in the day! Classics".
Last night, representatives for Cole said he will not be making a complaint.
"Ashley appreciates that Tweeting is so quick it often results in offhand and stray comments."