United site:
Malcolm Glazer is widely expected to attend Manchester United's opening match in the ChampionsWorld series against Bayern Munich on Sunday.
Major shareholder Glazer, who has a 19.2% stake in the club, can expect some
dissent, however, at Soldier Field.
The American arm of Shareholders United - a supporters' pressure group - are
ready to swing into action.
They remain concerned that Glazer, owner of the Tampa Bay Buccaneers, may be preparing a takeover bid.
The fans plan to unfurl a banner stating 'Not4Sale' at both the game and
United's training session later on Saturday (10pm British time) at the stadium.
They also plan to distribute 30,000 business cards during the club's three
matches in America in an aggressive attempt to persuade people to buy small
shares.
SU spokesman JD Deitch said: "If we can get 10-20,000 fans tomorrow giving out a message that an offer is not wanted then we will have gone some way to
succeeding.
"We are not concerned that United are talking to Malcolm Glazer but more that he could be buying the club.
"If it did happen then he could take the voice away from the supporters and of
course that disturbs us."
Deitch added: "This is not a personal vendetta against Malcolm Glazer. This is a
stance against those trying to profit from Manchester United."