Salah admits he faces a tough challenge to get into the side following his £11million move from Basle last month.
He said: "Playing in Switzerland and for Basle is not like Chelsea, it's more different.
"I hope I can play better here, do more than I did at Basle and I do a good career for me.
"He [Mourinho] said to me, 'We need you, you're a very good player and still young. Next year you will play more and will get better and better'.
"Now I am just concentrating on the pitch. It is not easy if you come to Chelsea and want to play, it's not easy for anyone.
"I will concentrate, work hard, do my work and we'll see.
"For everybody in Egypt this is a dream. To see one player playing in Chelsea, Manchester or Madrid, it's not easy for Egypt people [to do that]."
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