Salah was bought in the middle of last season from FC Basel after impressing for the Swiss side and scoring two winning goals against Chelsea in the Champions League group stages.
But he has failed to settle into the team at Stamford Bridge, managing just two goals and thirteen appearances for the Blues so far.
However, the Egypt international remains a talented player and there is plenty of speculation linking him to various clubs. His agent, Oliver Kronenberg, has recently talked up the prospect of his client leaving England and joining Serie A side Roma.
Despite Kronenberg's confidence, Chelsea manager Mourinho has denied any exit plans, saying that he wouldn’t allow any deal to leave him short on players with no plans to make any other purchases.
"He can't leave," Mourinho said after their 5-0 win against Swansea. "I have 20 players today with Didier a bit ill and Azpilicueta injured. I had all my players here today.
"I have a very short squad, I need everybody. For Salah to leave someone has to come, and I don't think we are going to let Salah go on loan and then spend some money to bring somebody else in. So I don't think so, unless my club comes to me and says Salah goes on loan and we are going to buy a £50 million player."