The Ferrari chairman thinks highly of the new technical boss.
Kovalainen told the Finnish newspaper Turun Sanomat he also cannot be sure that McLaren's gamble on Magnussen will pay off.
Lotus is still working to make 2014 simulator as accurate as possible.
Martin Whitmarsh said the rumours Mercedes will lead the game in 2014 cannot be verified.
Formula One teams are busy pointing fingers at which top team has spent the most money to contest the premier series.
Jenson Button: “I’m pleased for Checo. He won’t be with us next year, but he drove a great race today. Well done, mate."