Derek Hough on If Wife Hayley Will Rejoin Him on Tour After Skull Surgery (Exclusive)

Derek Hough is dishing on his "Symphony of Dance" tour! "Extra's" Billy Bush spoke with Derek, who also gave an update on wife Hayley Erbert's recovery after her cranial hematoma and skull surgery. He shared that Hayley is "doing wonderful," but they "aren't sure just yet" if she can join him on tour. He said, "We gotta to wait and see as far as clearance and health and safety... Regardless, she'll always be a part of it. She was there at the beginning inspiring a lot of it, and so she'll always...