Liverpool legend Steven Gerrard is being closely monitored with Jurgen Klopp reportedly tempted by the Germany job.
Celtic manager Neil Lennon has resigned following Sunday's 1-0 loss to Ross County, which left the Hoops 18 points behind Rangers.
Having publicly offered to step down on Tuesday, Andre Villas-Boas is now facing Marseille disciplinary action.
Andre Villas-Boas learned of Marseille signing Olivier Ntcham from the media and responded by submitting his resignation.
Celtic manager Neil Lennon and 13 players are isolating due to coronavirus but the club insists "rigorous" protocols were followed in Dubai.
While he is not looking at their 19-point lead, Steven Gerrard felt Rangers proved a point with their battling victory over Celtic.
They did not offer much attacking threat against Celtic, but Rangers earned a priceless victory that moved them closer to league glory.
Celtic have won just two of their past 10 games in all competitions, leading to large-scale fan protests outside the club's ground.
Gennaro Gattuso remembered legendary actor Sean Connery, who died aged 90 on Saturday.
Rangers lead Celtic by four points at the top of the table, but Steven Gerrard was not getting carried away despite sealing a famous double.