The list of five teams -- Toronto plus the Chicago Bulls, Los Angeles Lakers, Miami Heat and New York Knicks, sources said -- was given to Toronto management in case the Raptors want to construct a sign-and-trade deal (assuming Bosh doesn't re-sign with Toronto).
Bosh likes that option, sources told Ford, because he'd get one more year on his contract and could make more money.
"It has been narrowed down to a handful of teams, including us," Raptors general manager Bryan Colangelo told the Toronto Star without providing more detail.
Sources said the Raptors prefer a sign-and-trade if Bosh is intent on leaving as well. They likely would want a big man to replace the 6-10, 230-pound Bosh in the lineup.
One source said Bosh's decision hinges on where LeBron James signs.
"If LeBron decides to go to either New York or Chicago, I think that's where you'll see Chris land," the source told Ford. "If LeBron stays in Cleveland, I think the process is more wide open."
Bosh, 26, is an unrestricted free agent. He averaged 24 points per game last season and has averaged 20.2 points per game for his career.