Pochettino was adamant it was mere speculation and said it was the Saints hierarchy who will decide on the youngster's future, if such a time comes.
"That's the first time I hear about that, it's news to me," he said.
"Of course there will be interest in him but right now he is a player at Southampton Football Club and it looks like it will be continuing that way."
When asked what he would do if Shaw were to request to go to United, Pochettino replied: "That he needs to speak with the club. He needs to speak with his owner."
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