This is not going to happen, unless you find a developer who is willing to

# buy the product
# create a patch for supporting it in redmine
# support this patch in the future.

As this is a closed source commercial SCM, this is rather unlikely, unless you step in yourself.
--------------------------------------------------------------------------------
This would be helpful for the project I work on... Greatly. I think there would be a large user base who would appreciate this feature on their projects to help give ClearCase a shot in the arm... so to say.
--------------------------------------------------------------------------------
+1 again.. We trailed redmine for about 6 months and wen back to clearquest due to a lack of integration with clearcase, specifically source code traceability to bug reports. Help!

I'd be willing to give the development of this a shot if anyone could point me in the right direction to start..
--------------------------------------------------------------------------------