Sheffield Utd teammates hail Man Utd starlet John Cofie
Cofie headed a Blackman cross wide in the first half as the pair continue to build up a relationship on the field.
"John is a great player," Blackman told the Sheffield Star. "He is up-and-coming. He's on Manchester United's books so he's going to be one hell of a player. It's still early days but we are working hard."