It is the 4th time he has won the award this season.
The Egyptian star suffered a groin injury that forced him to leave the first leg early in the second half of Liverpool's 3-0 triumph last week.
Klopp's men will be hoping to pounce on City, who fell to defeat at the hands of their local rivals Manchester United on Saturday night, missing out on the chance to secure the Premier League title.
"We're not sure 100%, he was with the athletic coach yesterday", Klopp told a media conference ahead of Tuesday's return leg at the Etihad Stadium.
"Then you come into the stadium and the first thing I heard is they smashed the bus of Man City and it kills everything in that moment for us."The German added: "You can not be happy about that, you don't feel it any more".
"I don't want to give anything away and I want to wait".
Can suffered the injury before the global break last month and was initially expected to return in time to face City last week but the injury has proven hard to shift and Klopp is reluctant to put a timeframe on his recovery.
"That is not in the best place", Klopp added. He [Can] is receiving treatment and we're still hoping it will be a little bit quicker than maybe we thought in the first moment.
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