When he does it regularly against Championship sides then the argument closes. Right now, I think there is some validity to having another type of striker to give us options, but, at the right price and mentality to fit into our squad. The jury is still very much out for me regarding Cornick.
It's all very well scoring 4 against L2 opposition in a pre season friemdly. Lets hope he can do the same against the likes of Leeds, Leicester, 'boro, WBA and co in league games when it really matters.