#4 Luis Suarez
Luis Suarez has proved himself to be an amazing asset for Barcelona by scoring 100 goals so quickly. He has already won La Liga, the Champions League, and the Copa Del Rey with Barcelona.
He has also won the Spanish Golden Boot after arriving at the Catalan club and that came after he outshined both Cristiano Ronaldo and Lionel Messi. The Barcelona no.9 is having a great time this season too with impressive form, scoring 21 goals in just 25 league appearances.
He is a lethal striker and forms one of the best combinations with the genius Messi alongside him. The Uruguayan has established himself as one of the best strikers in Barcelona's history books within such a short span of time and it does look like he is going to stay at the Camp Nou for a few more years.
Suarez has established himself as an influencing personality on the field and looks like he could take the responsibility of leading the Blaugrana when needed. And this strengthens his position to be the fourth captain.