Liverpool boss Jurgen Klopp admits Nottingham Forest will be a "tricky" challenge.

The Reds host Forest on Sunday.

Klopp said, "In Germany we always say the second year is more difficult than the first one. Steve [Cooper] has done a really good job and I really hope not for the game but for the occasion that Divock Origi will be in the squad.

"I hope he's fit [Origi] so the people can give him a little hello, he would deserve that definitely.

"Besides that I don't wish him a good game that's clear. Besides that, a lot of options, a lot of different opportunities for him [Cooper] to pick from."

Klopp added: "It's a really big squad which is for sure a challenge to manage properly but he is doing it without any noise so it's working really well.

"I think it's clear from Nottingham Forest, they want to stay in the league and then progress from there and that is what they are doing at the moment in a super tricky Premier League.

"I know already it will be really tricky, the away game especially last year when we lost was a really hard day for us, but credit to Nottingham.

I think that day we were the better team but you couldn't see it on the scoresheet because they just stayed in the game and that is their biggest strength, that whatever happens they will stay in the game and in the moment they can score and punish you.

"We will be ready because it's a tough one."