Add “team owner” to Kevin Durant‘s massive resume … ’cause the NBA champ just bought a stake in the Philadelphia Union of the MLS!!

The Union announced the partnership on Monday … saying KD bought 5% of the team … with the option to take on another 5% down the road.

Durant’s official title will be “investor and community partner” … and the team will work with his Thirty Five Ventures on marketing and community outreach.

“I’m excited to partner with the Philadelphia Union for years to come,” KD said in a statement. “My team and I connected instantly with the Union coaching staff and leadership, as well as the team’s story.”

Durant says the team will work with his Kevin Durant Charity Foundation to make an impact in the communities surrounding Philadelphia as well.

Principal owner of the Union Jay Sugarman spoke about the new partnership, saying “The partnership between Kevin and the Philadelphia Union is based on a set of shared values and philosophies.”

“We want to be known as an innovator in our league and a team that is never satisfied with the status quo. Kevin brings us unique perspectives as a person, as a champion, and as a sports icon.”

“Combined with his competitive drive and forward-thinking mentality, we believe Kevin adds a key piece in reaching our ambitions for the club.”

KD joins fellow NBA superstar LeBron James into the soccer world — ‘Bron bought a stake in Liverpool F.C. in 2011.