Custom field formatted maybe

Hi,

When i link an user in a content, it using label linked to the entity referenced (user’s page). But the label is the user login, and i want to change it to use a custom field “Name Firstname” instead of the login label. And i want to keep the link to the entity referenced.

How can i do that ?

Thanks.

Drupal version: 


Source: https://www.drupal.org/taxonomy/term/4/feed