Jurgen Klopp says he has not yet decided whether he will start Daniel Sturridge on Thursday night.

As Liverpool prepare for the Europa League semi-final second leg with Villarreal at Anfield, Klopp admits he hasn't made a judgement call on starting the striker who was an unused sub in last week's 1-0 loss at El Madrigal.

"I was waiting for this question," said Klopp at the pre-match press conference.

"He could be, 100 per cent, but I've made no decision yet about the line-up.

"In all these thoughts, Daniel Sturridge is absolutely involved."