Martin Braithwaite has had an incredible few years on the football pitch.

The Danish striker was playing for Middlesbrough in the Championship back in 2017.

Fast forward four years and Braithwaite is now playing for one of the world's biggest clubs in Barcelona.

He has also recently helped Denmark to the semi-finals of Euro 2020.

While Braithwaite has enjoyed great success on the pitch, he's arguably enjoyed even more success off it.

Martin Braithwaite in action for Denmark

That's because Marca report, per Forbes, that Braithwaite is now one of the world's richest footballers.

Braithwaite isn't one of Barcelona's highest paid players. According to the Sun, he earns 'just' £85,000-per-week, making him the club's joint 14th highest earning player.

But, after Lionel Messi's contract with the club expired, he is now Barcelona's richest player due to his success in the US real estate market.

Back in 2017, Braithwaite invested $850,000 dollars into a business called NYCE Companies with his uncle, Philip Michael.

Their business had grown to $10m by the end of the year and now it is worth a staggering $250m.

Martin Braithwaite in action for Barcelona

According to Danish outlet B.T, Braithwaite and Michael own 1,500 apartments and have 500 more under development.

“It started with our family having been in the real estate business for a long time. Here you will find that one of the ways you can build a fortune and secure your future financially is by investing in real estate. And that's what I've been doing with my dad and Martin since I came over here,” says Michael.

“Martin’s role is very much about how we do in terms of strategy and vision in the long run. He is involved, but not so involved that it distracts him from football."

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That's not all, though, as Braithwaite also owns a clothing brand called 'Trente' with his wife, which is said to have had enormous success in France.

He also owns a restaurant, 'Gave', which is located in Barcelona.

What a brilliant few years it has been both on and off the pitch for Braithwaite.