The Notts manager blasted Fenton for his booking:
"It was a tackle that he did not need to make, the ball was not going anywhere." he said
"The last thing I said to the players before the match was not to pick up any daft bookings.
"Nicky has been one of our best players this season but he is no good to us when he is not on the pitch." Dearden said.
The Stags will be without Neil Moore when they visit Meadow Lane, he will also be serving a 1 match ban after picking up his 5th booking of the season against Crewe on Tuesday.