Jurgen Klopp has claimed that Liverpool now have "fantastic competition" in the left-back position following the arrival of Andrew Robertson from Hull City.
The Scotland international joined the Reds on a three-year deal on Friday afternoon, thought to be for a fee of around £10m.
Robertson will now compete with Alberto Moreno and makeshift defender James Milner for a starting spot next season, while Jon Flanagan can also cover that previously troublesome area of the field.
"This addition gives us fantastic competition in the left full-back position now," Klopp told the club's official website. "Obviously, James Milner did very well for us last season there and can play most positions on the football pitch.
"Alberto Moreno looks really good in pre-season and we have Jon Flanagan back, who can play left or right full-back. This signing strengthens us at full-back and I'm really pleased about this."
It marks a magical personal rise for Robertson, who was earning a living as a supermarket cashier just four years ago prior to making his big breakthrough when joining Hull.
"For Andrew this is another big step on what has been a quite incredible personal journey in a very short space of time," Klopp added. "I love his story; where he has come from professionally to reach this point.
"When you speak to him it is clear why he makes his progress. He has a burning love for playing football - he really loves the game. His attitude is outstanding - absolutely outstanding. His talent and skills - also very, very good.
"He has experience of this competition, the Premier League, and he has the mentality and quality to get even better. I know our environment will benefit him and help him push himself even more than he has already. This is a player who does not limit his ambition, I think."
Robertson has been capped 16 times at senior level by Scotland and racked up 33 Premier League appearances for relegated Hull last season.
