Manchester United boss Louis van Gaal believes patience is required over the development of striker Anthony Martial.
The 19-year-old scored a phenomenal goal on his debut in what many described as a Thierry Henry type of goal.
But the Dutchman is ready to wait before giving the youngster a regular place in his line-up.
"I have made a lot of debuts possible. A lot of my debutants have scored. Patrick Kluivert, for example. That's a good signal, nothing more," van Gaal is quoted as saying by the Manchester Evening News.
"That is why I am saying all of these things, that he is 19-years-old, that he had to adapt, that we have bought him for the future, that he is for my successor. These are all signals from me that we have to protect him.
"You cannot expect from players of 19, 20 or 21 the same consistency of a Schweinsteiger or Carrick. We have bought him because of his talent, but you have to show your talent at the right time on the pitch, and Martial has done that in his first match.
"We will have to wait and see if he can be consistent and do it every game. You have an average from strikers of around 50 or 60 per cent every match. His average at Monaco was lower, because his finishing was not so good. But against Liverpool it was 100 per cent.
"As a manager you are never satisfied. I want to improve every individual, but because of that you also improve the team performance, which is what we are doing."