— Liverpool FC (@LFC) August 25, 2016
Hart, who has been with the Reds since the 2012-13 campaign, has played 14 matches this season for Port Vale, 12 of which he has started, including nine in the league.
Hart, who featured for Liverpool in a pre-season friendly against Mainz this summer, became the Valiants’ 15th signing of the summer when he signed six days before the window cut-off.
The former Manchester United youth-team product, who can play at left-back or in left midfield, is contracted to Port Vale until the end of the season.
In other Liverpool team news, the club have made a striker approach and Klopp has personally called the player to smooth the deal.