McLaren sporting director Sam Michael says a "big job" awaits Daniel Ricciardo at Red Bull, but he believes he will succeed if he is given the right support by the team.
Ricciardo will replace Australian compatriot Mark Webber at Milton Keynes next year after making the step up from sister squad Toro Rosso.
The 24-year-old, though, will have his work cut out as he will be competing with three-time World Champion Sebastian Vettel and Michael warns that it won't be an easy task.
"If he came in and performed right at Sebastian's levels straight away then I think it would be quite amazing," Michael said during a Vodafone McLaren Mercedes phone-in.
"Red Bull know that better than anyone. Not only is Sebastian 'Grade One', he's also fully immersed in the team. It would be different again if both drivers arrived at a new team together, but Sebastian's been there for years now and won all these Championships.
"It's a big job for Daniel. I'm sure he can do it and it's up to Red Bull to guide him in that way and make sure they nurture him and give him the feedback and support and knowledge.
"But ultimately, it's grand prix racing so it's also survival of the fittest. He'll be in there to prove himself as quickly as possible."