The Reds open their campaign against Watford on Saturday before the first leg of their crunch European tie against Bundesliga outfit Hoffenheim.

But Klopp does not want his side to take their eye off the league.

He held a meeting with his squad on Friday when the Champions League draw was ongoing and then they trained without even asking who they got.

It was only after the session they discovered they would be facing Roberto Firmino’s former club.

“It’s no secret we want to play Champions League,” said Klopp.

“We are only looking at Watford. We go to Watford and I don’t know what we could do there to disappoint, like we could lose confidence.

“You can’t measure the importance of it. It’s the first game and then Hoffenheim is the second game.

“Some things could happen that we can’t avoid but we could leave players behind and then they could slip in the kitchen. You cannot do this. We will play 100 per cent.

“Maybe Watford will think we don’t have that mind-set. It’s my job to make sure that does not happen.”

The message was echoed by midfielder Georginio Wijnaldum.

“To be fair everybody is already busy with the Champions League but we have to play Watford first,” said the Dutchman.

“We have to start the Premier League good. Everybody is looking too far forward.

“We have to look first to Watford and then Hoffenheim. It looks like everyone is only busy with Hoffenheim. We must start the Premier League good because it can damage the confidence.”

Meanwhile, Klopp has also said he may not sign another defender.

Liverpool have been chasing Southampton centre-back Virgil van Dijk but had to step back from their pursuit when they were accused of tapping up by the Saints.

“We have four,” he said. “I don’t think we need more.

“In the moment I’m fine. We are open until the 31st. We cannot force the things and we would never get a centre-back just because.”