Yanks Interested In Jorge De La Rosa

From Mark Feinsand:

According to a source, the Yankees have expressed interest in lefthander Jorge de la Rosa, considered by many to be one of the top free-agent pitchers available after Lee.

De la Rosa, who turns 30 in April, went 8-7 with a 4.22 ERA with the Rockies last season, although he pitched well during the second half, allowing three earned runs or less in 13 of is final 14 starts.

Ummm, why?