Christian Horner has said that he is not worried about losing Daniel Ricciardo to a rival team.

When Red Bull launched its 2016 livery earlier this week, Australian Ricciardo warned that while his hopes are modest for the new year, he is also keen to keep the momentum in his career that looked set to skyrocket in 2014, meaning that a middling season could cost the team the 26-year-old.

However, boss Horner told L'Equipe: "I'm very relaxed with regards to the contracts that we have with our drivers, be they short, medium or long-term.

"It's up to us to provide them with a car that allows them to demonstrate their talent."

Ricciardo began racing for Red Bull in 2014, having spent the previous two seasons with Toro Rosso.