Spokesman Ted Crews said the team would have no further comment and declined to say if the move means the Rams are definitely on the sales block. An NFL spokesman declined comment. Phone messages left with Goldman Sachs weren't returned.
Frontiere was majority owner of the Rams, with 60 percent of the team, when she died in January 2008. Her death left her children, Chip Rosenbloom and Lucia Rodriguez, as majority owners. Columbia, Mo., billionaire Stan Kroenke owns the remaining 40 percent.
The franchise has struggled of late -- the Rams were 2-14 last season and are 5-27 over the past two seasons. Still, Forbes magazine has estimated the value of the franchise at $929 million.
The football Cardinals didn't make the playoffs during their final five seasons in St. Louis before leaving for Phoenix. St. Louis was so sure it would receive an expansion franchise in 1993 that a team name was picked out -- the Stallions. But the NFL instead opted for Jacksonville.
So civic leaders set out to lure an existing franchise, and Frontiere, who grew up in St. Louis, agreed to move the Rams from Los Angeles, the nation's second-largest market, to her hometown prior to the 1995 season.
Kroenke could be one potential buyer, but NFL rules prohibit cross-ownership with franchises of other leagues, so he would have to sell the NBA's Denver Nuggets and NHL's Colorado Avalanche to buy the Rams.
The Rams aren't going anywhere in the short term. A lease agreement requires the team to remain in the Edward Jones Dome through 2014.
But in the long run, the dome might be more of the problem than the solution. The deal that lured the Rams required the St. Louis Convention and Visitors Commission to keep the dome among the top quarter of all NFL stadiums, based on evaluations at 10-year intervals. If it is deemed to fall short prior to the 2015 season, the franchise can relocate.
By 2015, the then-20-year-old dome will be among the oldest NFL stadiums.
"We'll continue to work with whoever the owners are," CVC president Kitty Ratcliffe said.
The CVC is spending $30 million to upgrade the dome prior to the 2009 season. Improvements include new scoreboards and video boards and upgraded clubs. Ratcliffe knows the next phase of improvements could be even more expensive.
"It could be anything from that amount ($30 million) all the way up to needing a new facility, and anything in between," she said.
A new facility would be a tough sell. Taxpayers built the dome just 14 years ago, and when Major League Baseball's St. Louis Cardinals decided to replace old Busch Stadium, they had to so with mostly their own money.
Copyright 2009 by The Associated Press