Liverpool manager Jurgen Klopp has confirmed Mohamed Salah is a doubt to face Crystal Palace as he continues to struggle with an ongoing ankle problem. Salah was left out of Egypt’s squad for their recent Africa Cup of Nations qualifiers against Kenya and Comoros in order to continue treatment on the injury which he aggravated against Manchester City earlier this month.The 27-year-old has been able to train with Liverpool but Klopp is unsure if the forward will have recovered in time for Saturday’s trip to Selhurst Park. Sven backs Liverpool to win PL titleLovren: I had to start from zero againSalah, Robertson set to miss Palace gameKlopp said: “He has trained the whole time he has been here but only the things we wanted him to do.”Today is another important session for us to see how it looks and we can make a decision. It’s not that it got worse, it is still there, and that’s the problem.”We have to be sensible. I haven’t made a decision. I will have to see the session later.”Virgil van Dijk was also a doubt for the match after withdrawing from the Netherlands squad for their final European Qualifier against Estonia due to “personal…