Salah only secured a move to Liverpool last summer, but the Egyptian global has enjoyed a stunning first campaign at Anfield with 37 goals being scored in 42 appearances in all competitions.
Liverpool FC now turn their attentions back towards Premier League affairs and their crunch clash against Everton at Goodison Park on Saturday lunchtime.
"After the game I asked [Salah] and he said: 'I will be fine, I will be good.' But now we have to wait for the real diagnosis and not only Mo's self-diagnosis", Klopp said.
"Conor was last year in the U-18s and is in his first year with the U-23s - (he is) still a very young lad".
"I don't have too much to say", added Klopp, whose side sit third in the table.
"I don't think it makes sense to talk here about what we do with the boys in rehab".
"Probably the boys want to do it but that's a proper challenge then".
The 25-year-old winger won 57 percent of the votes, after scoring and assisting in a goal as well as producing a superb performance in Liverpool's 3-0 win over English Premier League leaders Manchester City in the first leg of the Champions League quarterfinals on Wednesday.
"We are trying everything to make him available", said the Reds boss.
Meanwhile, Firmino was also a substitute, with Klopp telling reporters that both players are being rested with one eye on the second leg fixture at the Etihad Stadium next week. That was enough for me to not even ask the doctor how he was, so we immediately took him off the pitch.
Salah has been Liverpool's most important player this season, having scored 38 goals in all competitions following his summer move from Roma.