Arsenal boss Wenger plays down jeers for Man Utd ace Van Persie
Wenger put the hostile reception down to "disappointed love".
"When he was here he didn't get this kind of reception," said Wenger. "They loved him, so today it was a bit disappointed love.
"He took his penalty very well and I knew when he decided to take the penalty that there was an 80 per cent chance that he would score because he was our penalty taker and I know well that he does that very well. He does many things very well."