Manchester United manager Louis van Gaal has stated that Anthony Martial will go on to be a key player for the club.

The 19-year-old striker scored two goals on his first Premier League start against Southampton on Sunday, helping the Red Devils to a 3-2 win on the South Coast.

Van Gaal has warned that while he is confident Martial will improve, fans should not put too much expectation on the Frenchman too soon.

"When you are 19 years old, you cannot expect consistency. Emotionally they shall have a lot of dips so that I expect also from him but that is not a big problem for me," Van Gaal told talkSPORT.

"I'm very happy that he is in three matches and his talent is at a high level and he adapts to the system of how we want to play, that is also important, not every player can adapt in that system but he shows he wants to do that and he can do that.

"He scores goals. That is the most important thing, that as a striker he scores goals. He can improve I think but he has a high level of talent. He shows it."

Martial has scored three goals in two league appearances for United.