"We hope that he will exploit the progress he's made as a striker at Liverpool," said Cuper on Monday.
On Sunday, Salah set a new single-season Premier League scoring record after notching his 32nd goal of the season for Liverpool, surpassing the old mark of 31 goals he had shared with Alan Shearer, Cristiano Ronaldo and Luis Suarez.
"But we have hope," he added. "We're optimistic."
Egypt will play away to Kuwait on May 25, tackle Colombia in Italy on June 1 and then travel to Belgium on June 6 in three World Cup warm-up matches before travelling to Russia. Egypt lost to Portugal (2-1) and Greece (1-0) in their last two friendlies.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)