Depends on the formation. If we stick with Parkinson's aye, I would have Diamond and Gooch on the pitch - I'd have Gooch as a striker (can anyone else in our squad both shoot and run - seems not to me), and therefore would have Diamond in the wing back role. Hell, why not get them rotating as game develops, that'd fuck some man to man marking teams right up, which is important as many teams have worked out that an effective ploy against us is to go man to man on the wing-backs.
If we switched to a more sensible formation under a new manager, then Gooch is back on the wing and Hume is an option on the other flank. I don't think Hume can do left-back in a back four, really don't. So Diamond and Gooch seem under more direct competition in that scenario.