McLaren did not comment on the reports and Capito was not immediately available.
The 58-year-old former Volkswagen motorsport director, who was recruited by Dennis, was appointed in January but did not start in the role at the Honda-powered team until September.
Former team boss Dennis, who remains a 25 percent shareholder in McLaren, was ousted in November with American marketing expert Zak Brown coming in as the new executive director.
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Brown, who is also chairman of the Motorsport Network that owns Autosport.com, is working alongside chief operating officer Jonathan Neale with Eric Boullier in charge of the Formula One team's day-to-day management.
(Reporting by Alan Baldwin, editing by Peter Rutherford)
