The amal valve should not be clicking, the ecu is teling it to though so look at that ecu/chip.
The rattle is not going to be turbo play, this would be a whine if gone far enough play wise to rattle it would have self destructed by now and eaten itself then gone in the engine.
Look at the turbo damper, and make sure the spring/bolt assmebly is not rattling as these often do when a bit loose, or some people forget to tighten the damper to head bolt!
tabetha