It's looking promising for Houston Rocket fan's as they are currently the clear frontrunners.
One executive with knowledge of the situation went as far as to say " if Russell Westbrook is not a part of Houston Rockets within a week I will be shocked."*
*Note this executive does not work for Houston Rockets and was offering third party opinion.
However the Milwaukee Bucks, Phoenix Suns, Minn Timberwolves and Miami Heat are still in pursuit.
The following teams have rejected or said not interested in regards to trading for Russell Westbrook:
San Antonio Spurs
New York Knicks