$author = get_the_terms( $post->ID, 'utente' );
var_dump($author);

array(1) { [9]=> object(stdClass)#3238 (10) { ["term_id"]=> string(1) "9" ["name"]=> string(5) "marco" ["slug"]=> string(5) "marco" ["term_group"]=> string(1) "0" ["term_taxonomy_id"]=> string(1) "9" ["taxonomy"]=> string(6) "utente" ["description"]=> string(0) "" ["parent"]=> string(1) "0" ["count"]=> string(2) "11" ["object_id"]=> string(2) "44" } }