Brendan Rodgers believes Glen Johnson is demonstrating the sort of form that has long had him regarded as one of world football's leading full-backs.

The defender returned to the starting line-up against Swansea City last month after a period on the sidelines due to injury.

Rodgers feels the period out of the team has allowed Johnson to regain his fitness and turn in some excellent displays.

"It's been really difficult for Glen because he has wanted to give so much more," said the boss.

"He has wanted to put himself out on the training pitch every day and play games but he was nowhere near 100 per cent right. Of course when you put yourself out there you are getting judged.

"That is why we had to give him that time out. There was no timeline on it. I just knew there was so much more to come from him.

"We needed to come together to find a way to get him back to his best. That meant taking him out in order for him to get back to that level.

"Now he's feeling fresh and playing for the first time in ages without any injuries. Now you see that mobility and running power that he has.

"I thought Glen was outstanding against Cardiff. He showed his strength and power for Daniel Sturridge's goal with how he executed that pass for Luis [Suarez].

"For our first goal, it was all about his running power without the ball and he put in a great cross for Luis.

"It's important for me with how we play that the full-backs can get up, join in and make runs in behind. We are seeing now the player we all know Liverpool had - which is one of the best full-backs in the world."