All-time Premier League top goalscorer Alan Shearer has told MOTD2, broadcast on February 28 at 10.45pm, that Manchester United United striker Marcus Rashford must "knuckle down" after making a big impression at Old Trafford.
On Sunday afternoon, Rashford repeated his two-goal salvo against FC Midtjylland three days earlier with another double on his Premier League debut against Arsenal as United defeated the Gunners by a 3-2 scoreline.
Some bookmakers already consider the 18-year-old to have an outside chance of making the England squad for this summer's European Championship Finals in France, but Shearer has suggested that now is the time for the teenager to work on his game.
In 1988, Shearer announced himself onto the top-flight stage in similar circumstances by scoring a hat-trick for Southampton against Arsenal at 17 years of age, but the legendary England international has issued a warning to Rashford ahead of United's upcoming fixtures.
The 45-year-old said: "Knuckle down, learn the game, and the rewards will no doubt come both on and off the pitch.
"We have seen many a time a kid come and score on their debut and be the next bright hope. He has got ability but have confidence too. He has had a fantastic start to his football career but now he has got to knuckle down and learn the game.
"He is at the right club to learn that. The hard work will start now for him because the scouts will watch him and know what his strengths and weaknesses are."
With the games coming thick and fast for United, Rashford is likely to continue his run in attack, starting with United's Premier League fixture at home to Watford on Wednesday night.
Following that match, United make the trip to The Hawthorns to play West Bromwich Albion before travelling to Anfield for the first leg of their Europa League last-of-16 tie with Liverpool.