Three ways Chelsea could line up after the arrival of Pierre-Emerick Aubameyang

The Blues have also snapped up youngsters Carney Chukwuemeka and Gabriel Slonina. 

With their summer spending totalling more than £250m, manager Tuchel is in for multiple selection headaches as his options are stacked in every department. 

Here are three ways Chelsea could line up for the remainder of the season.

3-4-3

Tuchel has always preferred this formation since he was appointed Chelsea boss but has opted to move away from using it in recent weeks. 

However, with Fofana in the building, Tuchel could be tempted to go back to his tried and tested setup, with Aubameyang set to lead the line.

3-4-3 (2) 

Sterling and Aubameyang are likely to be some of the first names on the Blues teamsheet after their summer arrival, leaving one space free in the Chelsea front three. 

4-3-3 

Could there be a potential change of formation for Tuchel as he looks to accommodate the array of talents at his disposal?Veteran centre-back Thiago Silva performs better at the hear of a defensive trio and could be displaced after Fofana and Koulibaly's respective arrivals

After their latest defeat against the Saints, Tuchel was critical of his players. 

“We are not tough enough to win these matches away," he said. "It was the same story like in Leeds, there we thought the problem was we didn't score in the first 25 minutes, and then they pushed us off-balance in two minutes with two goals and we could not find any answers.” 

With the clock ticking down to the transfer deadline and Aubameyang looking like the only high-profile arrival, Tuchel will have to act quick to make sure his new signings settle into the team as quick as possible. 

Next up for the Blues is a London derby against West Ham at Stamford Bridge.