This weekend is apparently a big weekend of pre-draft visits for the San Francisco 49ers, according to NFL Network reporter Ian Rapoport. He tweeted that UCLA linebacker Myles Jack will be in Santa Clara to meet with 49ers brass. The 49ers have been connected to Jack in mock drafts, but their primary "real" connection to him this offseason was when linebackers coach Jason Tarver worked out the UCLA linebackers.
Jack is finishing up his recovery from a torn meniscus. He suffered the injury in late September, and it cost him the rest of the season. He has yet to run a 40-yard dash, and while that is far from the end of the world, it is something that will likely be discussed during the meeting. Jack's UCLA surgeon cleared him previously.
The 49ers inside linebacker need is not necessarily the most pressing need, as Gerald Hodges and Michael Wilhoite would be adequate options next to NaVorro Bowman. However, if Jack was available at No. 7, there's a good chance he would be the best player available.
The best chance for Jack to slip would be if both Jared Goff and Carson Wentz go in the top six. If both are gone, that drops at least one quality defensive option. My guess is Jack will still be gone, but the top six could be unpredictable.