The 18 year old has already made 43 first-team appearances for the Saints and is expected to be handed his first England call-up sooner rather than later.
"It is a very clear situation," the Saints boss said. "The player wants to stay, the club is not willing to sell.
"What we also need to consider is that he is an 18-year-old player, that he is still maturing, still progressing. He is still learning how to be an experienced player.
"We need to be very calm about the situation. It has taken his sometime to mature as a player and I think all these rumours and all this speculation around him is not beneficial for him. I think it is negative for him.
"Again, the player is just not for sale. Again, he wants to stay, so there is no Luke Shaw case."
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