UPDATE 2:36 P.M.
Donovan, who coached Florida to two national championships, replaces Scott Brooks, who the team fired last week.
Per NewsOK.com:
[T]he Thunder is betting on Donovan fitting in with the team’s culture and, more importantly, building on that culture and pushing the franchise to an elusive first championship.It’s a substantial gamble for a franchise that faces an uncertain future with (Kevin) Durant, who will be highly sought after as an unrestricted free agent at the end of next season. (Russell) Westbrook and (Serge) Ibaka will be unrestricted free agents a year later, in July 2017.
This post will be updated with more information.