DETROIT -- What began as a casual, joking conversation between New York Yankees president Randy Levine and Miami Marlins owner Jeffrey Loria about the possibility of Alex Rodriguez playing for the Marlins may develop into serious trade talks this offseason, according to a source with knowledge of the conversation.

According to the source, Levine and Loria discussed the possibility of A-Rod playing in Miami, his hometown, but characterized it as a joke between old friends.

The conversation between the Yankees and Marlins initially was reported by Keith Olbermann on his MLB.com "Nerd Blog." Variety also reported the news.

However, Yankees general manager Brian Cashman said he has had no trade talks regarding Rodriguez with anyone and described the first report as "false."

"I have had no discussions whatsoever with the (Miami) Marlins," Cashman said. "Certainly would never have any trade discussions under the circumstances. I certainly have not had any discussions with any GMs other than the pregame meetings with Dan Duquette with the Orioles, with the umpires and then with Dave Dombrowski (of the Tigers). But I've had no trade discussions, so false. One hundred percent false."

According to the source, Loria said in his conversation about A-Rod with Levine, "Alex is Mr. Miami; it would be great if he played here for us."

To which Levine is said to have replied, "You can have him."

A second source with knowledge of Rodriguez's thinking said the likely only place Rodriguez eventually would accept a trade to is Miami. Rodriguez has five years and $114 million remaining on his contract, not including milestone home run bonuses.