Wenger says the credit should be shared between the two clubs.
"The real question is at what age can you think you have produced a player?" he said. "For me he has been educated at Southampton [but] I consider today that a top, top, top Premier League club produces a player when it takes them at 16 and is bold enough educate him and play him in the Premier League.
"He had no starts in the Premier League - he went to the World Cup [in 2006] without any starts in the Premier League [so] it's a question that is quite open.
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