Put this code in the functions.php
file.
add_action( 'show_user_profile', 'my_show_extra_profile_fields' );
add_action( 'edit_user_profile', 'my_show_extra_profile_fields' );
function my_show_extra_profile_fields( $user ) { ?>
<h3>Go back to home</h3>
<table class="form-table">
<tr>
<td>
<a href="https://wordpress.stackexchange.com/questions/56172/<?php echo home_url(); ?>" title="Go back">Home</a>
</td>
</tr>
</table>
<?php }
Check this tutorial for more detail.
You can put any mark up you want, I just modified the example and have put a link to go to the homepage.
Hope this helps!