Leo on Nostr: If I follow a person on Nostr and this person start to post on a relay that I don't ...

If I follow a person on Nostr and this person start to post on a relay that I don't follow, is it possible to be notified that this person that I follow started to post on a relay that is not on my client?
With a message like: person A that you follow, posted a message on a relay that is not added on your client, do you want to add this relay to see the messages from person A?