Webb, Head of Football Operations at the Terriers, brought the Gunners star to the John Smith's Stadium last year on loan.
He told BBC Sport: “It was a different challenge for him altogether at Huddersfield and I think it really helped him.
“The training was quite competitive and physical, which he enjoyed and he took it on to the pitch. He was getting knocked and kicked and bullied about a bit, but he took it all in his stride.
“That really developed his fighting spirit, which has helped him now because he came into Arsenal when they were in a bit of a dip and they needed that."