"He's got a fantastic foundation of a football club to work with," PA quotes Morgan as saying. "The supporters, the stadium, the academy, the infrastructure and the squad of players, it's a good job to be inheriting.
"It comes to a time when players stand up, players are counted. Players play the game. As coaches and managers you can do what you want from Monday to Friday, you can set them up, you can drill them as much as you want, but the players play the game.
"I'm not sure about the timescale but I am sure the club want to get somebody in as soon as possible because we have another big game coming up next week against Port Vale."
United, who are three points from safety in League One, welcome Vale to Bramall Lane next Saturday.