Weekend mail call:Mark from Fruita, Colo., wants to know if I think the San Francisco 49ers could move up in the first round of the draft to take Clemson receiver Sammy Watkins.Bill Williamson: It would take a lot to get up to Watkins, the best receiver on the board. He could go as high as No. 5 and he will certainly go in the top 10. I'm not sure if the 49ers will be able to get all the way up from No. 30 to get a chance to take Watkins.