Transfer News 2018/19: 6 Major deals that should have happened

#4 Kalidou Koulibaly - Napoli to Chelsea

The tall Senegalese center-back is what Chelsea would've wanted.

A strong, power-packed defensive lineup plays an important role in order to intimidate and deny the waves of attacks offered by the opposition.

For Chelsea, however, everything seems to be fine but the back-wall. With a not so consistent David Luiz, a doubtful Gary Cahill, a busy Cesar Azpilicueta, and a fresh Rudiger, the blues' defensive lineup need a reset. Sure enough, they are enjoying an unbelievable run due to their iconic midfield lineup, and a world-class attacking front three; The defensive stats aren't quite up to the mark.

By the end of the FIFA World Cup, under the realm of Maurizio Sarri, the Italian manager was looking forward to hiring an old acquaintance. A 6'4 beast of a Senegalese centre-back, who isn't just known for his size, but also his pace, leadership qualities and an unparallel playmaking ability from the back of the defensive line.

Such was the impact of this powerhouse, that the Polish coach Jerzy Brzęczek just couldn't break him during Poland's clash with Senegal. However, the 27-year-old Kalidou Koulibaly just seemed to be too important for his current team, as they put a £80million price tag on their most important defender.

Sarri's hopes of securing the maestro collapsed as the club couldn't spend a fortune, because it would disrupt the other transfer plans of Chelsea. Had this happened, the Blues would've been the most complete team in the Premier League, and probably the world.