James Milner is close to returning from injury which leaves Mo Salah with a potential problem as he chases the Golden Boot for the Premier League's top scorer.
Milner is Liverpool's designated penalty-taker and the Egyptian has scored six times from the spot in his absence this season.
'James Milner is our No 1 penalty-taker but when he is not playing it is Mo,' confirmed Klopp.
'But when Milly is on the pitch then he can decide. I can think of at least one time he was on the pitch and gave it to Mo.