Arsenal manager Arsene Wenger admits he did not like seeing Andre Santos swap shirts with Robin van Persie on the weekend.

The Brazilian left-back and the Manchester United striker swapped shirts as they came off at half-time of the Red Devils' 2-1 win at Old Trafford on Saturday and it was an incident that came under plenty of scrutiny from the Gunners boss.

"I spoke about that but I don't want to make too much of a big story of that," said Wenger.

"I believe that was not the right thing to do at all, but that is not an explanation for our bad performance on Saturday."

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