If say Scarlett starts tonight, we are a couple of goals down and not looking like getting back into it on the hour mark and Harris comes on then you would wonder why we wouldn't loan Goodwin out in January, if in that scenario you can't get a run out over an out of form Harris who has played a lot of minutes already then short of injuries you are never playing.
I will say that if we did somehow sign an Al Hamadi type (can't see it being him or anyone at that level but still) I have a feeling Spurs might recall Scarlett if they get a hint he won't be starting much, so its a complicated situation.