Portsmouth have confirmed Avram Grant can step in to replace sacked manager Paul Hart.
Hart was assured his job was safe by chief executive Peter Storrie and owner Ali Al-Faraj when Grant was appointed director of football last month.
But the board ran out of patience after the 3-1 defeat at Blackburn and Sunday's 1-0 loss at Stoke.
Pompey director Mark Jacob told The Sun: "It was not an easy decision to take. But the fact was our results haven't been good enough.
"We should have more points by now and it was felt a change was needed to ensure the club's Premier League survival. We believe we have the ideal man to remedy the situation in Avram and are still waiting for confirmation of his work permit.
"He will take charge of team affairs as soon as that is in place. Until then, first-team coaches Ian Woan and Paul Groves will be in charge.
"Paul Hart was asked to stay as technical director in charge of developing our 18 to 21-year-olds but he declined."