The 24-year-old Catalan has featured in seven different positions for the Blaugrana, but he is making the right-back role his own under Luis Enrique.
"Why haven't we sold him yet?" In the summers of 2014 and even 2015, many Barcelona fans were wondering why Sergi Roberto was still at the club. But Luis Enrique kept faith in the young Catalan - and he has never looked back.
The talent was always there and as long ago as 2011, Pep Guardiola said: "Sergi Roberto is a player to follow in the coming years. When he explodes, you will be really surprised by him.