Fantasy Impact - Johnson seemed valuable for a short while last year but he actually strikes out a lot. His power is useful in fantasy leagues but the average and OBP is not roster worthy. He may be a nice free agency add if he suddenly goes on a streak.
Predictions - .242, 45 R, 17 HR, 58 RBI, 50 BB, 150 K, 6 SB
For more info on Johnson's signing see: http://newyork.cbslocal.com/2014/02/12/whos-on-3rd-with-a-rod-banished-yanks-turn-to-johnson-co/
Image citations in order of page: http://newyorksportshub.wordpress.com/2013/12/17/addressing-the-yankees-needs-at-2b/