Liverpool manager Jurgen Klopp has rejected suggestions his team has reached the end of its useful lifespan and insists judgement should be reserved until the end of the season.Back-to-back defeats against the Premier League’s bottom two clubs, Nottingham Forest and Leeds, have left his side closer to the relegation zone than the top four.The current starting XI has one of the oldest average ages in the division, with the likes of Virgil van Dijk, Mohamed Salah and Roberto Firmino all the wrong side of 30.But Klopp insists it is too early to write off his side.