Despite the credentials of Suri, Sarkamies said he would have to juggle the demands of all of Nokia's businesses carefully.
"He may not necessarily be an ideal candidate because as a shareholder, you could be worried about how he will use his time. Will there be a danger of the ball being dropped on NSN if the CEO is going to spend more time on other businesses within the company?," Sarkamies said.
After shedding its handset service, Nokia will be left with its main NSN arm, as well as an Advanced Technologies unit, responsible for creating new infrastructure products and licensing them under patents, and the HERE mapping and location business.
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Advanced Technologies made operating profits of 329 million euros in 2013, while HERE bought in 48 million euros, relatively small compared with NSN.
The new Nokia is more "nimble", according to Daniel Gleeson, mobile analyst at IHS, who said Nokia would expand its smaller units, creating new technologies under patents and selling the licenses.
"The part of Nokia that will try to be more nimble is its Advanced Technologies Unit," Gleeson told CNBC in a TV interview.
"At the moment that unit is mainly going to be based around licensing its existing patents. But I'd say you're going to see a lot of research into some new technologies, and hopefully even some new products will come out of Nokia in two or three years' time from that unit."