Fifita was linked to the Dragons on Tuesday after Morris left the premiership-winning prop out of his game-day 17 for a third consecutive week.
Dragons coach Anthony Griffin was coy on the club's interest in Fifita when pressed on Thursday, while Morris insists he had no knowledge the Sharks prop was interested in moving on.
"It's all speculation as far as I can see," Morris said on Friday.
"We've had no approach from Andrew or his management so I'm not going to get drawn into any comment."