Manager confirms Hartley's Red Bull ousting 'political'

Brendon Hartley's manager has confirmed that the driver's ousting by Red Bull was a "very political" move.

20-year-old New Zealander Hartley was one of the energy drink outfit's development drivers this year, also attending races with Daniel Ricciardo as joint F1 reserve driver.

But, with little explanation, he has suddenly lost his drive in the Formula Renault 3.5 series, and apparently also his place on the F1 programme.