Rio Ferdinand has already faced a Football Association hearing into his improper conduct charge which arose from his response to a Twitter message that characterised Chelsea defender Ashley Cole as a "choc-ice".
The Manchester United defender vowed to contest the charge at a personal hearing, and it is understood that was held last Friday.
The verdict has yet to be announced.
Cole was a defence witness when John Terry was acquitted in July of racially abusing Ferdinand's brother Anton Ferdinand, the QPR defender.
Ferdinand reacted in an amused fashion to the "choc-ice" Tweet which came from another Twitter user.
It is a term which is slang to mean "black on the outside, white on the inside", and was a reference from its original writer to Cole's testimony in court.
The Chelsea full-back told the court he did not hear Terry make a racist remark to Anton Ferdinand during the match between Chelsea and QPR at Loftus Road in October.