The 27-year-old has been with Southampton since he was 8 years old, and Hasenhuttl insists he is happy at St. Mary's.
"He has another four years on his contract, he's our captain and he's happy here," said Hasenhuttl.
"Fans love him and we know how important he is to our team. The development of his game is why he's a true winner.
"I think he's very exceptional. I haven't seen any players similar."
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