United fans are not happy about the club being around £715million so protests started some time ago leaving the Glazers in no doubt as to what the fans think.
But Ferguson wants supporters to put their energy behind the team.
The Scot said: “There is one situation that clouds the new season – the continued opposition to the Glazer family, our owners.
“Fans are entitled to protest but not to the detriment of the team.
“The fact is that the Glazer family own Manchester United and, until such time as they decide they want to sell, they will stay as owners regardless of the protest.
“Everyone is entitled to take a view – but what I don’t want to see is Manchester United mired in so much controversy that it deflects our purpose of winning matches.
“When we have had success it has been a collective effort with everyone united – the management, players and fans.”