There was some speculation that the Rockies “checked in” on Santana, on Monday. This speculation was due to the Rockies shutting down Chacin. However according to Thomas Harding of MLB.com “The hope is Chacin’s right shoulder-biceps issue is not serious enough for the Rockies to need to make a signing. The official said the club reached out to Santana early in the free-agency process, but it backed away and does not have renewed interest for several reasons.” So for now, the Rockies seemed content with their current pitching staff.
Source: Thomas Harding MLB.com