His representatives are already looking at sites for a purpose-built football-only stadium, according to a source in Miami.
"They have people looking real hard. They want to be in the urban core," the source said.
MLS confirmed it was in discussions with Beckham but declined to confirm if a deal had been struck.
"Our policy regarding discussions with potential expansion team owners is that we keep those conversations private until the individuals we are speaking with decide they want to go public with their plans. Thus, it is more appropriate for David Beckham to comment on his plans."
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