SAML deep linking

I think you can use RelayState.

Reference:

http://support.f5.com/kb/en-us/products/big-ip_apm/manuals/product/apm-authentication-single-sign-on-11-5-0/29.html

Optional: In the Relay State field, type a value. The relay state can be an absolute path, such as /hr/index.html; it can be a URL, such as https://www.abc.com/index.html; or, it can be anything that the service provider understands. The service provider uses this information to redirect users after they are authenticated. APM sends this value back to the service provider as part of the assertion response in the RelayState parameter. When the RelayState parameter is already part of the authentication request to the BIG-IP system, APM returns the value that was sent in the request. Otherwise, APM uses the value from this configuration.