Salah will leave Egypt's Africa Cup of Nations squad to continue treatment for a hamstring injury at his club, Liverpool, but he is expected to return to the tournament in Ivory Coast.
According to the Egyptian Football Association, Salah will play against Cape Verde on Monday before traveling to the United Kingdom.
"After communication between the Egyptian medical staff and their Liverpool counterparts, we have agreed that the player will return to the UK to continue his treatment, hoping to return to the Egypt team for the semi-finals."
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The announcement comes after Liverpool manager Jurgen Klopp stated that it "makes sense" for the 31-year-old to seek treatment in England.
"That's the plan," Klopp said following Liverpool's 4-0 win over Bournemouth on Sunday when asked if Salah would return to Merseyside.
"If that's already decided 100 per cent, I don't know. But that's the plan. I think probably everybody sees it makes sense that he's doing the rehab with us or with our people."
Salah has already been ruled out of the Pharaohs' critical Group B meeting with Cape Verde in Abidjan on Monday and Egpyt's last-16 fixture if they advance.
The Egyptian FA had hoped he would return for a quarter-final but now looks resigned to missing him until a probable semi-final on February 7.
Klopp did keep the door open for Salah to return to the tournament if he can demonstrate his health while Egypt is still alive.
"If Egypt qualifies for the final and he is fit before the final, then probably yes," Klopp said. "Why not?" That is evident.
After drawing their first two games in the tournament, the record seven-time African champions must face already-qualified Cape Verde to guarantee their place in the last 16.
His injury is the latest tragic turn of events for the player at the AFCON.
He has never won the trophy and has twice lost in the final, to Cameroon in 2017 and Senegal two years ago.
Salah told a press conference on Sunday that he believes he will be crowned Africa's champion "sooner or later".
