You read threads on this board and you have to laugh some days ... "all he does is score" Not sure people understand the value of a midfielder capable of scoring 10+ goals, especially from a non central position. Most of the top clubs could do with that.
What Chadli did that a few people missed on week-end was stay wide, as good as Alli/Eriksen/Lamela/Dembele are, they all tend to drift in, the opponents narrow their lines and compress the pitch. Chadli stayed out, crossed from outside (led to Kane's goal) and only came in when in possession of the ball (then took his shot).
He might be far more useful against park the bus setups than people give him credit for.
p.s. expect he will play in the cup game (and probably score again)