Well for the mock draft since we can't trade we really shouldn't concentrate too much on guards, but Tannebaum is trying to collect draft picks for 2017 so if one of the top guys on their board is gone by 13 I wouldn't be surprised if they move down. Some of the IOL I've been looking at have been Max Tuerk, Vadal Alexander and Evan Boehm but I've also heard of some tackles (Jack Conklin) being moved to guard.
For CBs those are the top 3 but I'd also add Eli Apple. I like both Apple and Jackson because of their height...I'm tired of short CBs....it would be hard to say no to Hargreaves if he's there though, but my favorites so far would be Jackson or Apple.
For LBs we have the usual Jaylon Smith/Myles Jack, two other names are Darron Lee or Ragland for Miami, I'm not sold one any of the LBs honestly, I hate to say it but I think we're better off staying with Misi/Jenkins/Alonso and picking up someone in the later rounds.
For DE I'm not sold on Bosa, I think I'd rather go with Buckner or Lawson at 13. I would prefer a CB at 13 but if not then DE would be the next best pick imo.