Liverpool have announced the signing of Luis Alberto from Spanish side Sevilla, subject to international clearance.
The young attacker, who is capped at youth football level with Spain, scored 11 goals and provided 17 assists for Barcelona B in a loan spell.
A statement on Liverpool's official website read, "Liverpool Football Club have today completed the signing of Spanish forward Luis Alberto from Sevilla, subject to international clearance.
"The 20-year-old, who can play anywhere across the attacking line, has penned a long-term contract after passing a medical at Melwood."
Reds manager Brendan Rogers added, "We are all delighted that Luis has decided to join Liverpool.
"He has the correct footballing profile and mentality to be a Liverpool player.
"I look forward to working with him to develop his talent and he joins a group of young exciting players at our club."
The player himself continued, "I feel like I'm in a bubble at the moment. For me Liverpool is a top team. I feel like I am dreaming and I want to enjoy it to the full.
"I feel very excited, I've never felt so excited before but I'm very happy. I think I am the happiest man on earth.
"I was surprised [when Liverpool showed interest in me]. You never expect this to happen to you. But as the deal moved forward, I became very happy and I wanted to come to Liverpool.
"I have come here to enjoy moments with the supporters - and I know the supporters will help me to never walk alone.
"I hope that between us all we can make this club one of the greatest in the world, once again."