I know the knock on this guy - He hasn't been able to stay healthy throughout his entire career.
For the Yankees who are in need of power, that could actually be an investment worth making.
Check out his numbers when he does play and makes his way in 90 or so games (what he would do in a platoon before flaming out) http://espn.go.com/mlb/player/stats/.../travis-hafner
Travis Hafner when he does play still puts up big numbers. He would be a force at Yankee Stadium even if he got hurt at some point, the production he would give at a cheap price is worth considering since the market is so weak and limited in terms of available power bats.
He has a .381 Career On Base Percentage, a .507 SLG percentage, and a lifetime .278 average.
Even though he's been injured in the past three seasons he still has put up an .855 OPS against right handed pitching with 29 homeruns and 101 RBI. That .855 OPS while battling injury is pretty impressive.
If you assume he stays healthy in a platoon situation which the Yankees are known to do at DH, you could be looking at another low risk high reward investment that pays off for the Yankees like Raul Ibanez did at age 40 with the short porch in right.
He's 35 years old and when he's healthy, he is crushing the ball as his numbers suggest. At this stage in the game its an investment worth making. He won't strike out like a Carlos Pena type and if you look at his OBP numbers you would see he's the right guy to pursue given this teams needs. (2009 - .355, 2010 - .374, .2011 - .361, 2012 - .346) OBP
In a platoon situation at DH with 385 ABs(the amount Ibanez got last season) he could absolutely destroy pitching for the Yankees, with the short porch, at a steal of a price.
The more I read about Hafner coming at a discount, the more the idea of taking a chance of Pronk and his power makes sense to me. Put him in the 7th spot of the order and give it a shot. If he's not healthy we have guys internally who can take over. If he is healthy, it's a steal