BuddyPress.org

Hi,
something like this may work:

if ( is_user_logged_in() || bp_is_active( 'friends' ) ) :
    $href = bp_loggedin_user_domain() . bp_get_friends_slug() . '/';
    endif;
  echo '<a href='. $href .'><img src="path/to/img.jpg" alt="" /></a>';