Easy tiger I'm pretty sure Robertson would have done just as much as Milner if he had to come on.
Lucky for Milner he can cover midfield although the less said about that the better!
Was Moreno before he went off?
The answer's no. So why can't I praise a very good performance? He was everywhere! Peach of a cross for Mané's first and was then the furthest forward player for Salah's.
I like Robertson, but based on current form & rhythm, as well as the size of the match, I'd side with Milner all day for Sunday.