Trade rumor - Luke Gregerson for Angel Guzman?

The Cubs are strapped for cash.  So the likely moves left will likely involve trades rather than free agent signings.  One such trade that may make sense money wise is trading Angel Guzman to the Padres for Luke Gregerson.  Word is that the Padres really like Guzman, seeing him as their possible closer of the future.  The Cubs reportedly like Luke Gregerson, who had similar numbers as Guzman but would be cheaper, at least in the short term.

Last year, Gregerson was 2 and 4 with a 3.24 ERA in 72 games.  He struck out 93 in 75.0 innings, while walking 31.  Last year, on the other hand, Guzman went 3 and 3 with a .295 ERA in 55 games.  He threw 61.0 innings, striking out 47 and walking 23.  Sounds like that trade could make sense financially as well as on the field.  Your thoughts?