Kevin Magnussen and his former manager have failed to resolve a dispute amicably, and the two parties will now see each other in a court of law.
The Dane reportedly split with his business manager Dorte Riis Madsen when he lost his McLaren seat after a single season at the end of the 2014.
After a sabbatical year away from F1, Magnussen negotiated his return to the sport with Renault on his own, and was then assisted by billionaire sponsor Anders Holch Povlsen as he put together his current multi-year Haas deal.
Now, Ekstra Bladet newspaper says a court battle with Riis Madsen will begin on June 1.
The case will be heard in Copenhagen, with Magnussen's former manager claiming damages for the driver's current and future income over breach of contract.
"Attempts at an out of court settlement have failed," the Danish newspaper claimed.
Former Danish racing driver Jason Watt said disputes over long-term contracts in motor racing are nothing new.
"Contract lengths of 10-15 years are not unusual," he said.
"A manager puts in money to build a career and it may take years before there is a return."
Neither Magnussen nor Riis Madsen would offer any comment on the pending litigation case.
“Want to win a trackday experience? All you have to do is subscribe to our FREE newsletter HERE”
GALLERY: All the action from Barcelona on Sunday
Keep up to date with all the F1 news via Facebook and Twitter
Alex Albon has defended his interim Williams teammate Franco Colapinto, arguing that the rookie’s costly…
Today, we at F1i.com raise a celebratory glass to our esteemed founder, Bertrand Gachot, who…
McLaren roared back to the pinnacle of Formula 1 in 2024, clinching their first Constructors'…
Liam Lawson has revealed that he became the target of online abuse by fans of…
As Carlos Sainz prepares for a new chapter in his Formula 1 career with Williams,…
Sebastian Montoya, the 19-year-old son of former Formula 1 star Juan Pablo Montoya, is set…