With the Phillies reacquiring Cliff Lee, they have a lot of money committed to their top four starters. Joe Blanton is still owed $17 mil over the next two seasons, so they will be looking to move him.
Let's be honest. Our rotation for this upcoming season is very weak in its current state. Greinke would be a nice piece to add, but we still need to fill out the entire starting five. Joe Blanton has been consistent, if not good, over the last six seasons, putting up 17.4 wins-above-replacement (an average of 2.9 per season). For those unfamiliar with the statistic, 1 WAR is roughly equal to $5 million in terms of what they player's salary "should" be, in today's economy. Livan had 3 wins last season, and Jordan Zimmermann can pitch at that level, but there is a big drop-off after those two. In terms of WAR, Blanton's worst season (2010: 1.9) is better than John Lannan's best (2009: 1.5). He would be a huge upgrade.
Although he's sometimes perceived as overpaid, fat, lazy, etc, Blanton has shown over the last 6 years that he is a respectable #3 starter in any given NL rotation. He would instantly improve our rotation's ever-important-yet-significantly-lacking ability to strike people out. (An aside on the value of the strikeout: "An out is an out" when Nyjer Morgan robs someone of a double, but the potential for a double would not have been there had the pitcher struck out the batter. A strikeout pitcher is better than a pitch-to-contact guy any day of the weak, ground balls being equal). Blanton's K's/9 is a respectable 7.2 over the last two seasons. Jordan Zimmermann can punch batters out (8.75 K/9 career), but after him, there is a big drop-off. John Lannan, Yunesky Maya and Livan Hernandez cannot be counted on to pile up the K's (unless Eric Gregg is calling the balls and "strikes." Flash back:
http://www.nytimes.com/1997/10/13/sports/league-championship-series-outside-chance-hernandez-s-15-strikeouts-put-marlins.html)
At $8.5 million dollars per season, Blanton might seem expensive on the surface. But I suspect the Phillies will be willing to eat a significant portion of his contract in order to get a deal done, and they will still save a lot of money. Amaro probably won't get full value in terms of prospects for him, either. I wouldn't be surprised if he's now on Rizzo's radar.