There has been speculation throughout the NFL draft season that the San Francisco 49ers could be a prime candidate to move up in the first round next Thursday.A potential trade partner could be the Baltimore Ravens. The Ravens hold the No. 17 pick. Ravens general manager Ozzie Newsome told reporters Wednesday that they have already received calls for the pick. Let's look at some reasons how the 49ers (who have the 30th overall pick in the first round) and the Ravens could be trade partners.