"After the World Cup, without training and 23 days holiday and the team not training together, all these things, it was a difficult position," said the Reds' boss.
"Then we had international duties, friendlies, international games, Champions League qualification.
"The team can't train normally but now they are improving. After winning against Tottenham we will be a little bit better, but there is room for improving.
"Maybe now we will see the real Liverpool, the one I'd like to see. The players just need time.
"You can't improve your stamina levels or your pace in a training session in one week you need to train more."