Martial has a huge amount of buzz surrounding him following his £36m move to Man United on deadline day.
The Frenchman made a blistering start to life at Old Trafford by scoring against Liverpool on his debut and he also impressed against PSV Eindhoven last time out.
Van Gaal insisted Martial will be assessed on a week-by-week basis despite the excellent start.
“At 19-year-old, [Martial] isn’t fully developed. I didn’t say I don’t count on him for certain games, I have to judge every week,” van Gaal said.
Van Gaal has handed a number of young players first-team opportunities at United and it is likely that he will continue to do the same with Martial.
However, the experienced Dutchman is right in saying that it is important not to keep him in the limelight for too long. There is a huge amount of scrutiny with Martial and one bad performance could knock the youngster’s confidence.