The midfielder made his Saints debut in victory at West Bromwich Albion on Saturday.
“He did well,” Lambert told the Daily Echo. “He was away with us for 18 days and I was surprised how he handled it. It’s hard for anyone to be away for 18 days, but for a young lad it must be very hard, and he’s done terrific. He made a good impression on all the lads and, obviously, the manager."
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