The 25-year-old joined Leeds United on loan during the summer.
Tottenham striker could be back in mid-October.
The Hull City caretaker boss says it will take a strong side to stop Jurgen Klopp's team.
Garry Monk was appointed the Leeds United head coach in the summer.
Mauricio Pochetino has hinted that winger Heung-min Son could start up front ahead of Vincent Janssen against CSKA Moscow.
Charlie Austin was linked with a move to West Ham United before he left Queens Park Rangers for Southampton.
Spurs will be looking to challenge for the Premier League title once again, despite also featuring in the Champions League.
West Ham United's defensive woes continue, with Kevin Constant now linked with a move to the club.
Reading are looking for their fifth consecutive Championship win.
West Ham United lost against Southampton in the Premier League on Sunday.