Wayne Rooney scored twice to cancel out Kyle Walker's first-half opener then Sandro's effort in the second half but it was another missed opportunity for the Red Devils who conceded late in their 2-2 draw with Cardiff City last week.
"We had a great win in midweek," he said.
"But for a minute in Cardiff near the end you would have been saying that Man United had a really good week. It is not easy place to come, Tottenham.
"They had their own pride which they showed in their performance. So it was disappointing. United have to win. That was why in the end we were trying to get a third goal but we could not quite do it."
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