Liverpool manager Jurgen Klopp has admitted uncertainty about the future of goalkeeper Simon Mignolet.

The Belgian stopper, who has been replaced as the Reds' first-choice goalkeeper by Loris Karius, has not featured for the Merseyside club since the FA Cup defeat to West Bromwich Albion in January.

Reds manager Klopp, who previously rotated his goalkeepers, has said that he is only focused on selecting his team for the Champions League tie with Porto on Wednesday night.

"Nobody knows about the future, or I don't know about the future," the German told reporters. "In this business it is always the same - it says nothing about that.

"It's not for me to think about these kind of things. I have to make a decision for tomorrow night and that's all. No problem."

Liverpool's clash with Porto - their first in the knockout stages since 2009 - is followed by a Premier League game against West Ham United later this month.