Sir Alex Ferguson has condemned the increasing amount of agent power in the modern game as players move freely between clubs.

The Manchester United manager fell victim to the free movement of players last month when Ravel Morrison left to join West Ham on transfer deadline day.

But Ferguson believes the game has evolved "enormously" during his time in management as players benefit from much more freedom.

And the United manager insists the involvement of agents bargaining to get the most lucrative deal possible is becoming detrimental to the game of football.

"When I first started out in management 37 years ago there were no agents," the Scot said.

"Imagine that. There was no freedom of contract either, so players were totally tied to their clubs.

"A change in that sense was inevitable, though I think that now the scales have topped completely in the other direction and I'm not sure it's good for the game."

However, Ferguson insists the business of management is entirely different as one dip in form could jeopardise a future in the game.

Despite the tenacious nature industry which has seen regular changes over recent years Ferguson accepts he in is a privileged position at Old Trafford.

"This is a results industry, if a manager loses four or five games in a row, then his job is under threat," he added.

"At United that scenario simply isn't possible. I'm in charge of all footballing matters, including our scouting network and youth teams.

"In that sense I'm very fortunate, because I can make quick decisions on who to bring in next to strengthen the squad and where to get them from."