I'm pleased to announce we will have a very special guest with us on Friday's chat -- San Francisco 49ers' running back Marcus Lattimore.It starts at noon ET/9 a.m. PT. This is a great opportunity to talk to a potential NFL star, and I urge you to take advantage. Lattimore is a terrific young man and he will surely offer insight into his recovery from his devastating knee injury and his plans for 2014.Check it out.