It is not too unusual for a licensee to turn in their license and then a potential buyer comes forth. In most cases,if the renewal date has not come and gone, the FCC will let you take back the license to sell it to another party. This happened about a year or so ago with a CP for an FM assigned to Comstock, Texas. After surrendering the CP to the FCC, I think it was KHCB that showed interest and the FCC allowed the CP to be active again so it could be transferred to a new owner (maybe Formby was the guy that originally had that CP). Possibly this is how Arthur Liu got the frequency. I do recall Bill turned in the AM license because I remarked to my owner that he should have sold it. My station owner explained the concept of tuning in a license in order to prevent a new local competitor. I recall that pretty vividly as I learned something that day.