The 21-year-old, who was one of the star players in Hawick's disappointing campaign, left Mansfield Park at the end of the season for a spell in New Zealand.
But his quick return has prompted rumours of a trial with the Warriors.
However, a spokesman for the Scottish Rugby Union told the Hawick News this week: "Sean Lineen has simply invited him to train with the squad when convenient and on an adhoc basis - nothing more."