5 players that could play key roles in Barcelona's treble push in the 2018/2019 season

#4 Jordi Alba

Alba's galloping runs down the left will be key

Following the disaster that was the 2016/2017 season, Alba came back with a bang last season. He will be looking to continue that again in the 2018/2019 season.

The most senior fullback at the club and one of its on-pitch leaders, the left-back is expected to play even more this season. This is due to the sale of Lucas Digne to Everton.

Last season, the La Masia product went back to the good old days as his marauding runs down the left flank provided Barca with a very important outlet for attacking. This was as a result of the overtly defensive setup employed by Valverde and the lack of dynamism from midfield.

With the expected improvement of Dembele as well as the addition of Malcolm and the dynamism that Vidal would bring in the midfield, Alba's surging runs are going to be of vital importance for the Blaugrana.

It is expected that he would combine with whoever starts on the left hand side of the team's attack (expected to be one of Dembele or Malcolm) to overload that flank and draw out the opposing defenders to create space in the middle and on the right flank.

Youngster Marc Cucurella is expected to be drafted into the team as the 2nd choice left-back and Alba's guidance and mentoring will be of great importance for the youngster.