We're talking about one player here. If we don't date to take on Luton without Son we are pussies. Even then we can still bring him on if needed.
That sounds good in theory, but in reality they could score a deflected goal, their keeper could have a worldy, VAR might fuck us (that is the norm - not last weekend).
It can easily turn into a horrible day. We literally beat Sheffield with the latest comeback in history.