Liverpool are strongly linked with Nabil Fekir.
The former star turned pundit believes one man has been quietly instrumental for Spurs this season.
Mane has proved to be an excellent signing from Southampton, but will miss some January games because of Senegal's participation in the Africa Cup of Nations.
Molby thinks conceding goals can keep the Reds sharp.
Liverpool take on Manchester United on Monday night at Anfield, and there will be plenty of eyes on who will be starting in goal for the home side.
Klopp was appointed Liverpool manager a year ago on Saturday.
Premier League rivals Liverpool and Tottenham Hotspur will face each other in the EFL Cup next month.
Sakho was told to leave the club on loan, but remains at Liverpool now the transfer deadline has passed.
Molby says he had no problem with Daniel Sturridge's comments when asked about his role, and doesn't think Jurgen Klopp will either.
Liverpool will be hoping to get back to winning ways in the Premier League with a tough test against Tottenham after last weekend's defeat to Burnley.
Origi scored his first Liverpool goals against Southampton in the League Cup, netting a hat-trick in a 6-1 win.
Benteke scored his fifth goal for the Reds in a 2-1 win over Bordeaux.
Lovren is in line for a return to the Liverpool starting XI this weekend when they take on Manchester City.