The 49ers will have to wait another year to open their new stadium in Santa Clara.
Team president Jed York said Wednesday the stadium's opening has been pushed back to 2015 because of problems securing financing. The team expected to start playing in the new stadium in 2014.
York said the Niners would not be able to get funding for the stadium from the NFL and other investors until the players' union and league agree on a new contract.
If the 49ers choose to stay in San Francisco, city officials said they would not encounter the same financing problems.