diff --git a/custom_metadata.php b/custom_metadata.php
index 3570143..83c4237 100644
--- a/custom_metadata.php
+++ b/custom_metadata.php
@@ -745,6 +745,15 @@ function _get_save_callback( $field ) {
 			return $callback;
 		return '';
 	}
+    
+    function _get_delete_callback( $field, $object_type ) {
+		$callback = isset( $field->delete_callback ) ? $field->delete_callback : '';
+
+		if ( ! ( $callback && is_callable( $callback ) ) )
+			$callback = '';
+
+		return apply_filters( 'custom_metadata_manager_get_delete_callback', $callback, $field, $object_type );
+	}
 
 	function get_sanitize_callback( $field ) {
 		$callback = $field->sanitize_callback;
@@ -763,7 +772,7 @@ function get_display_column_callback( $field ) {
 	function _get_field_value( $field_slug, $field, $object_type, $object_id ) {
 
 		$get_value_callback = $this->_get_value_callback( $field );
-		echo $get_value_callback;
+		
 		if( $get_value_callback )
 			return call_user_func( $get_value_callback, $object_type, $object_id, $field_slug );
 
@@ -813,7 +822,13 @@ function _save_field_value( $field_slug, $field, $object_type, $object_id, $valu
 	}
 
 	function _delete_field_value( $field_slug, $field, $object_type, $object_id, $value = false ) {
-		if( ! in_array( $object_type, $this->_non_post_types ) )
+		
+        $delete_callback = $this->_get_delete_callback( $field, $object_type );
+        
+        if($delete_callback)
+                return call_user_func( $delete_callback, $object_type, $object_id, $field_slug );
+        
+        if( ! in_array( $object_type, $this->_non_post_types ) )
 			$object_type = 'post';
 
 		$field_slug = sanitize_key( $field_slug );
@@ -1032,4 +1047,4 @@ function x_add_metadata_field( $slug, $object_types = 'post', $args = array() )
 function x_add_metadata_group( $slug, $object_types, $args = array() ) {
 	global $custom_metadata_manager;
 	$custom_metadata_manager->add_metadata_group( $slug, $object_types, $args );
-}
\ No newline at end of file
+}