He had two players on him from the end of the line, and the third right-back was waiting for him just behind the two outside defenders. They understood he was the number one threat, and, with the right flank dead, Monaco's weak five-man defense crept towards Doku and managed to cut off any connection with Haaland. He made two runs and demanded the ball deep inside, but he wasn't served by Rodri, who was average yesterday.
The excessive over-responsibility of Doku and the left flank is starting to show. The opponents are watching him, and that's not a solution; we'll have to vary our attacking style.