is looking to sell Internet ad agency
and French marketing company
is thought to be a potential buyer, the
Microsoft bought Razorfish in 2007 as part of its $6 billion acquisition of
. The software company has hired
to help it find a buyer for Razorfish, which used to go under the name Avenue A Razorfish.
reports that one analyst estimates Razorfish could be worth $600 million to $700 million.
Microsoft declined to comment for the
Razorfish, based in Seattle, has more than 2,000 employees. Its clients include
Razorfish is credited with designing the logo for Microsoft's new search engine Bing, as well as creating the online ads for Bing's publicity campaign, according to