How to display a warning when update package which depends on the particular version of an existing

Question

Example: Package Foo wich depends on package Bar on version 0.1 When I update package bar to version 0.2 I want to see a message that, there is package Foo which depends on version 0.1 of the package Bar, but I do not want to abort the install process.

Is there any way to do this? (maybe some extra line in control file)

Thanks