Jenson Button will have to be at his best during the 2014 Formula One season if he wants to finish ahead of new team-mate Kevin Magnussen, former McLaren driver David Coulthard believes.
Speaking to British newspaper Metro, the Scot added that the Danish rookie looks like the 'real deal'.
"The UK is well represented at the present with Lewis [Hamilton] and Jenson," Coulthard, who now works as a pundit for BBC Sport F1, said when asked how the British drivers in will do this year.
"They are two different personalities and Lewis looks to have the brightest future at the moment. Jenson is more experienced but may need a big year just to stay ahead of the challenge from exciting young Danish driver Kevin Magnussen at McLaren. He looks the real deal."
Coulthard, who won 13 races during a glittering F1 career, also believes the Mercedes team to be the one to beat this season.
"If I had to put money on it today, I would think that one of the Mercedes powered F1 cars would be right up there," he continued.
"Ferrari have also been going about their business quietly but, the way things can change so swiftly in F1, that may not be the same a month or two down the line."
Red Bull's struggles during the pre-season have been a hot topic of discussion in recent times, but Coulthard believes it would be foolish to write the Milton Keynes team off at this stage of the season.
"It is ten years since they started and not many people gave them a hope of winning a GP, let alone a championship or let alone four [championships]," Coulthard added.
"They have got there because of the harmony of the team from top to bottom and because of that tremendous work ethic. They have a strong team, with the engineers and technical staff all willing to put in long, long hours to get it right."