"I am very happy we have Eduardo back because we have plenty of offensive players who are out," said Wenger.
"We have [Andrey] Arshavin, [Theo] Walcott, [Samir] Nasri and of course Van Persie.
"Eduardo on top of that would have been too many strikers to have out.
"That is why I am very happy to have him back. It was a good surprise I must say."