Marcus Rashford must guard against "laziness" if he is to remain one of Europe's most potent forwards, says Manchester United manager Erik ten Hag.

Rashford, 25, headed in his 21st goal this term in Sunday's 2-0 win at Leeds.

It leaves the England striker one goal short of his best return in a season which came in 2019-20 under former boss Ole Gunnar Solskjaer.

"I don't know when it will stop but if you are satisfied with it, then it will," said Ten Hag.

"And because satisfaction goes to laziness, you have to keep investing every day. When he keeps the investment and keeps the focus in every game and brings the energy and belief in, he will keep scoring.

"He has the skills to score with right, with left and with his head. It's about him getting into position."