AC Milan coach Stefano Pioli was pleased with Yunus Musah's performance in victory over Lazio - but felt he could do better.
Musah was a 28th minute substitute for injured Ruben Loftus-Cheek.
Pioli said: "In the first half, those who received the ball were more markable, Musah has more pace and insertion characteristics, so he favoured Pulisic in one-on-one situations.
"I would like Yunus to be a little more disciplined but he brought a lot of quality into the match.
"He can play in front of the defence but is more of a midfielder, while Reijnders has great ball management."