The Red Devils head to The Hawthorns looking for a victory to cement their place in the top four of the Premier League after they beat Everton 2-1 in their last top-flight outing.
But the Dutchman is taking nothing for granted ahead of his side’s trip to face the Baggies.
“I think West Brom are very difficult to beat, especially at their home,” said Van Gaal.
“They play not only long balls but they also play a positional game. They are dangerous opponents. But no opponent in the Premier League is easy to beat.
“We have to start with a victory after the international break because we have won the last two games, but West Brom did that too so they also want to win the match. It won’t be easy.”
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