During the draft, the San Francisco 49ers acquired receiver Stevie Johnson from the Buffalo Bills for a conditional fourth-round pick. NFL Nation 49ers reporter Bill Williamson and Buffalo Bills reporter Mike Rodak discuss what the trade means for both teams.Williamson: Mike, it appeared Johnson's days with the Bills were over when they moved up to take Clemson receiver Sammy Watkins with the No. 4 overall pick. Johnson was gone less than 24 hours later.