Robert Califf is the leading contender for FDA commissioner

Dr. Robert Califf is currently the leading contender for his old job as commissioner of the Food and Drug Administration, two sources tell CBS News. 

Califf, who served as FDA commissioner under former President Obama, is the top contender for the post, but with the caveat that this isn't a done deal. Sources familiar with Califf say he's the type of nominee who will not ignite passions on either side of the aisle, and if nominated, would likely be confirmed.

"There has not been a decision made for the FDA commissioner and we remain grateful to the strong acting leadership at the FDA," a White House official told CBS News.