The youngster was sent off for a challenge on Gary Mulligan during the weekend's battle with Gillingham leaving the bees to play 65 minutes with ten men and defender John Mousinho between the sticks.
Brentford appealed however and got the card overturned by the Football Association,
"I'm delighted that the FA has come to a decision" Rosenior said,
"We obviously felt we were unfairly treated on the day and it's nice to see a poor decision being rectified.
"We are pleased for ourselves and of course for the player. It now means that he is available to play at Oldham and the ruling is a big boost to all at the club."
Clark Masters himself was obviously delighted stating,
""I'm absolutely chuffed. I never doubted the decision was wrong although I accepted the red card without argument."