2. Lukaku needs to score in big games and get behind defenders
Martinez sprung the tactical surprise that defined the first half, deploying De Bruyne as a false nine and Lukaku on the right of the front three, as he did on occasion at Everton.
The switch allowed the Manchester United striker to exploit the acres of space behind Marcelo and gain a head of steam in isolation against Miranda. It was a masterstroke.
Lukaku’s touch occasionally failed him as it often does, but he presents a unique match-up problem charging infield from wide and clearly has the intelligence to function out of his No 9 comfort zone. Jose Mourinho is unlikely to ever use him there, but Martinez has shown him an alternative.