#5 Sergio Busquets
Sergio Busquets hasn't failed in leaving his imprint on the world of football and has created a legacy at Barcelona. He has remained loyal to the club throughout his career and has won 33 trophies in his glittering career. He was a part of the one of the greatest midfield trios of all time, when Andres Iniesta and Xavi were at the club.
He is the exact definition of a defensive midfielder as he hardly goes forward to contribute in goals. The World Cup winner is pretty much a 3rd centre-back, and just stays at the back. He has scored just one goal in the last 3 seasons with Barcelona, showing his willingness to stay at the back and ensure that opposition teams don't score. The Spanish international won 90 tackles in the La Liga last season with a success % of 65.