Manchester United boss David Moyes admits there is frustration with their Premier League form.
Moyes cannot explain entirely why the winning formula on the domestic front is proving so elusive, particularly given last week his side put five past Bayer Leverkusen in one of United's all-time great European away victories.
"I don't think there is a reason," he said. "If there was, I would obviously be changing it.
"We are doing okay, but I am still looking for it to get better."
