The Dane, ousted by McLaren, recently tested Porsche’s Le Mans-winning sports car prototype.
And now, the Danish tabloid Ekstra Bladet is reporting that Magnussen will test a Mercedes DTM car at Jerez next week.
“It is true that I am going there to test. It will probably be on the third day,” he confirmed.
“It will be a great experience and I appreciate the opportunity,” he added.
The new DTM champion, driving for Mercedes, is Pascal Wehrlein, who is now tipped to step up to F1 next year with Manor.
Magnussen said: “They (Mercedes) will evaluate the drivers and maybe find one for next season. But I haven’t committed myself to something for next year.
“For me, it is a test and a great opportunity to try a racing car I haven’t tried before, and then we will see what the future brings. So far it is only a test,” he added.
Magnussen has not ruled out combining a race seat elsewhere with a F1 reserve role.
“Possibly,” he said, “but there is nothing certain yet.” (GMM)