Spirit this trade is not up to us but for the trade committee to decide on according to page 9 of the league constitution.
Cosart is according to mlb.com the 31st out of the top 50 prospects and now the #1 of the astros (though we may disagree with this).
Scouting report: When healthy, the 2008 Draft pick has electric stuff, with one of the better fastballs in the Minors and a very good curve. He's lean and projectable and he's got good command of his stuff, though his changeup, as with many young pitchers, is behind the other offerings. The bigger issue has been staying injury-free. In 2009, it was his back and shoulder. Last year, his season ended at the end of June with a bad elbow.
Phillippe Aumont is also the #10 prospect in the Phillies organization.
I can see both side to this trade but that is for the trade committee to decide on.