
The Catalan giants won the La Liga and Copa Del Rey title last season. Ernesto Valverde predominantly played a 4-4-2 formation last season. Though it was not as flashy as a 4-3-3 they played under Pep, it was really effective and yielded good results.
There are a couple of big money arrivals at the Camp Nou. Clement Lenglet arrived for a fee of € 35.9 million from Sevilla and Arthur arrived from Gremio for a fee of around € 40 million. Coutinho is expected to play a huge role in his first full season at the club.
On that note, let’s take a look at the three ways Barcelona can line-up in the 2018/19 season
#1) 4 – 4 – 2

Ever since Ernesto Valverde arrived at the Camp Nou, 12 months ago, Barcelona’s way of playing football has changed dramatically. Unlike Pep Guardiola or Luis Enrique, Valverde relies a lot on balance and defensive stability.
4-4-2 formation has been the most used one by Ernesto Valverde last season. Valverde is not expected to make major changes to his tactics for the 2018/19 season. Sergio Busquets and Ivan Rakitic could partner in the central midfield with Philippe Coutinho and Ousmane Dembele on either side.
#2) 4 – 3 – 3

This was the second-most used formation by Ernesto Valverde during the 2017/18 season. The arrival of Ousmane Dembele has allowed him to play three up front.
With the departure of Andres Iniesta and Paulinho, Ivan Rakitic, Philippe Coutinho, and Sergio Busquets form the midfield trio. Also, they have Arthur as a backup to play in the central midfield.
#3) 4 – 2 – 3 – 1

4-2-3-1 has become a standard formation in modern-day football. Managers like Jose Mourinho has used it to great effect in European football in the last 10 years. Valverde has tried this formation on a couple of instances in La Liga last season.
This will allow their full-backs to go forward as Busquets provides the defensive cover at the back. Rakitic will play a free role in the middle of the park as the situation demands.