Beckham, who retired from playing in May, has until December to exercise an option, negotiated when he joined Los Angeles Galaxy in 2007, to buy an MLS franchise for a discounted price of $25m (£15.5m).
“A year ago I had a look around,” said the 38-year-old. “Miami was one of the places, but we have looked at others too. It is exciting. Being an owner of a team is something that I’m passionate about.”
The former midfielder is thought to be hoping to raise money towards the running of the team and the cost of building a new stadium.