Short answer No.
The longer answer is Yes, but not the way you want.
MS was lazy when it created the 64 bit version. They made minor required changes to the program before "compiling" it to 64bit. So all of the program files have the same names. And they installer puts the 64 bit program files in exactly the same place as
the 32 bit files. But 32 bit programs cannot use 64bit sub programs. What it means you can only have 32 or 64 bit Office installed, not a mix.
You will have to uninstall 64 bit Office, then install 32 bit Office, including Outlook.
This is not a problem. Your license allows you to use either version. Simply doing a "normal" uninstall will leave behind configuration information that the next install will pick up so that user sees no difference. There is effectively no performance difference
between 32 and 64 bit Office applications. The only difference the user may notice is if they need to use VERY large files, 2-3GB or more. 32 Bit won't handle them.
Let us know if you need more specific information.