Chelsea boss Roberto di Matteo was in the dark over Christophe Lollichon's dismissal during their Champions League win at Benfica.
Goalkeeping coach Lochillon was sent to the stands.
Di Matteo said: "I don't know exactly what the reason was. I was focused so much on the game."
Football Is Life
Share The Love
Stay in touch with Tribal news, updates and special offers direct to your inbox