Brazil legend Lucio believes Philippe Coutinho can become one of the best players in the world if he stays at Liverpool.
The former Inter Milan and Bayern Munich defender reckons Coutinho, who has been in amazing form this season for the Reds, would be making the wrong decision if he decides to leave Anfield at this stage of his career.
"I am very happy that he is having success at Liverpool ," Lucio told Sky Sports. "There is potential to be the best player in the world, of that there is no doubt.
"But it will depend on what happens around him. He is only going to get better. When he was at Inter, he wasn't playing and we got closer, and lived nearby to each other.
"My family got to know his family, and gave all our support, and we helped him achieve what he has with that support. Everything that he is doing now is down to his marriage and family. His attitude is perfect."
He added: "I think that is a personal decision for him [to move], but Barcelona have a lot of great players, but that can put a shade on his play."