If you can't beat them, join them. Or pay them good money to join you. Sound fair?
The 21-year-old Basel winger first struck against Chelsea in last season's Europa League, before scoring twice against them in this season's Champions League. The latter were particularly painful for Blues fans as they led to shock Basel wins against Mourinho's men.
But any more individual efforts of brilliance from Salah will now likely see the Blues themselves hit the back of the net, providing the ultimate solution to an otherwise frustrating problem.
Here's what Chelsea fans now have to look forward to, rather than fear:
Europa League 2012/13 (Chelsea 3-1 Basel)
Champions League 2013/14 (Chelsea 1-2 Basel)
Champions League 2013/14 (Basel 1-0 Chelsea)
image: © Jason Bagley