A fans group is attempting to raise funds to try to buy a stake in Newcastle United if owner Mike Ashley is successful in selling the club.
Ashley, who saw a £300m bid from a Saudi Arabian-backed group collapse last year, remains intent to sell.
Greg Tomlinson, chair of the Trust, said fans have "to put our money where our mouth is".
"For decades, fans have been told they are the lifeblood of the club, but when major decisions are made, they are always left out.
"It is an unfortunate fact that in football, as in life, money talks.