West Ham's Arthur Masuaku admitted he spat at Nick Powell in Saturday's FA Cup loss to Wigan Athletic, with manager David Moyes condemning his player's "despicable" actions.
Premier League side West Ham trailed to an early Will Grigg goal when Masuaku was dismissed four minutes into the second half.
Replays indicated Masuaku appeared to spit at Powell and Moyes confirmed after the match the player had acknowledged his indiscipline.
"I asked him did he spit? And he said yes," Moyes told reporters.
"Arthur - what he did was despicable. He will get something [a punishment] off us.