Premier League club Aston Villa also have an option to make Philippe Coutinho’s transfer permanent at the end of the season.
The latest round of testing on Tuesday returned a significant number of positive cases, according to a Liverpool statement.
The manager also confirmed that the Belgian striker is in contention to return for the Blues in Wednesday's Carabao Cup game.
Liverpool lead the Premier League battle against Chelsea 2-0 in the early stages, but Mateo Kovacic and Christian Pulisic leveled the scoreline.
With Chelsea taking on Liverpool - two closest challengers to Manchester City for the league title - the match could prove decisive in which team stays in the hunt for the league t...
Lukaku gave an interview to Sky in Italy in which the Belgian said he was "not very happy with the situation" at Stamford Bridge.
On the back of the shock 1-0 defeat against Leicester City, Liverpool FC are now nine points shy of leaders Manchester City with a game in hand.
Leicester City defeated Liverpool 1-0 in the Premier League fixture at the King Power Stadium on Tuesday.
Caoimhin Kelleher made two saves in the spot-kicks as the home side prevailed 5-4 and progressed to a last-four showdown with Arsenal in January.
A compelling Premier League meeting in London ended with a point apiece after Liverpool and Tottenham Hotspur played out a 2-2 draw.