The move, which sets up a rival to the Champions League competition, was condemned by football authorities and political leaders, with UEFA saying participating clubs would be banned from domestic leagues, such as the Premier League.
Clubs from England, Spain and Italy have signed up to the plans, while no German or French sides have yet to be associated with the breakaway.
Former Liverpool midfielder Murphy said players would be risking too much to take part in the proposed Super League.
“The plans … sound soulless,” he told the BBC.
“We’ve already seen strong opposition from leagues and federations who would be affected, and fans as well. Next, I think we will see a backlash from managers and players too.”
World football’s governing body FIFA has previously threatened to ban any players taking part in a breakaway from participating in World Cups and Murphy said the consequences for players could be severe.
“You’re also being told you can no longer play for your country if you are part of this,” he added. “Again, that’s what you dream of doing as a kid, so I just don’t see many footballers agreeing to that, which actually gives me hope that this whole idea will quickly fall apart.”
Former Manchester United captain Roy Keane said the Super League was all about “money and greed”.
“Let’s hope it’s stopped in its tracks,” he told Sky Sports. “We talk about big clubs, Bayern Munich are one of the biggest clubs in the world. At least they’ve made a stance, which is a good start.”
Former Manchester City defender Micah Richards said the new competition had not taken into consideration the fans of clubs.
“What happens to the memories of what the fans have had over the years?” Richards said.
“They’re just forgotten about for the sake of money, and that’s the way football has become now. I think it’s an absolute disgrace,”