"Sunderland will make it very difficult for us coming to Anfield," he said, ahead of Wednesday night's Premier League game at Anfield.
"I know they got beat at Norwich on Saturday but they are still fighting for their lives
“We need to make sure we are back on it for Wednesday night. First and foremost, we need to concentrate on ourselves.
"We have got eight cup finals left. It doesn’t matter who it’s against – every game is massive. We need to treat every game like we’re playing Man City or Arsenal."