The Red Sox, Twins and Astros are all interested in trading for Aaron Harang, FOX Sports' Ken Rosenthal reports (on Twitter). The Rockies hold Harang's trade rights after recently acquiring him from the Dodgers for catcher Ramon Hernandez, although the Rockies designated Harang for assignment immediately after the deal.
Harang pitched 179 2/3 innings for the Dodgers in 2012, posting a 3.61 ERA, 6.6 K/9 and 4.3 BB/9. The Dodgers had an abundance of starting pitching and didn't have much use for him in 2013, and given his age (34) and declining peripherals (not to mention the fact that the Rockies have already designated him for assignment), it's unlikely even a team in need of pitching would be willing to give up much for him. The fact that the Dodgers are paying $4.25MM of the $7MM he's owed in 2013 (he also has a $2MM buyout and a mutual option for 2014) should make him a somewhat more attractive trade target, however.
The Red Sox could be looking for a replacement for John Lackey, who left his start Saturday with an injury. Alfredo Aceves currently appears likely to take Lackey's place. The Twins and Astros both have weak rotations and could use a veteran to eat innings, although Darren Wolfson of 1500 ESPN in Minneapolis wrote Saturday (on Twitter) that a Twins official said the team was not interested in Harang.