Manchester United boss Louis van Gaal was disappointed with Robin van Persie's spotkick miss in defeat to West Bromwich Albion.

Van Persie's return failed to end the goal drought, as he saw a second-half penalty saved by Boaz Myhill, after Jonas Olsson deflected a Chris Brunt free-kick past David De Gea for a shock winner.

"Normally, Robin shoots the penalties very good but it was also a good save from the keeper," said van Gaal to MUTV. "You have to give the credit also to the goalkeeper but it was our biggest chance as it was without a lot of bodies in front of you.

"It's also a concern now [a lack of goals] because it's not a coincidence and, in spite of the way we have played against Chelsea, Everton and now against West Bromwich Albion, we have created a lot of chances and still we don't score. So you can say, as manager, we were not unlucky in every match. It's also that you have to finish these chances. We have lost three times in a row so it's also in the hands of my players. It is less secure [a top-four place]."