Liverpool have reached the last two Champions League finals, beating Tottenham in the Spanish capital in June after losing to Real Madrid 12 months earlier.
Klopp's side start their bid to win a seventh European Cup with a trip to Napoli for their Group E opener on Tuesday.
Jurgen Klopp's side have seized the early initiative in the Premier League with four successive wins to open up a two-point lead over second placed Manchester City.
Adrian had once been a regular for West Ham but did not play in the Premier League last season and his last appearance before arriving at Anfield had been an FA Cup defeat.
After their sixth European cup, there are concerns over how little time off some of Liverpool's leading players have had in the summer.
Former Liverpool defender Stephen Warnock is delighted with the way Jurgen Klopp has turned around the club’s fortunes.
Jurgen Klopp will be looking to add another trophy while Frank Lampard will want his team to bounce back from their 4-0 loss to Manchester United.
Liverpool boss Jurgen Klopp revealed that he does not expect the 26-year-old Brazil Alisson Becker international to be available for several weeks.
Liverpool manager Jurgen Klopp feels it is time to move on from Champions League triumph celebration
Liverpool got off to a great start in the league as they vanquished Norwich City by 4-1.
Mane had played the Africa Cup of Nations final for Senegal against Algeria. He had missed Liverpool's FA Community Shield match against Manchester City as he had taken a break for holidays.
The European champions have been conspicuously quiet in the transfer market while most of their competitors have delved into the arms race for talent.
Even 97 points last season wasn't enough to end Liverpool's wait for a league title since 1990. Will they fare better this time around?
Liverpool finished on the second position in the last edition as they fell one point short from the winners Manchester City, who had 98 points. However, the club managed to win the Champions League.
Liverpool defeated Tottenham in the Champions League final to win the title.
Liverpool boss Jurgen Klopp called out Manchester City for spending millions regardless of UEFA's FFP restrictions.