Romelu Lukaku has returned to Chelsea.
Seven years after leaving Stamford Bridge, the Belgium forward has become one of Europe's leading strikers, and the Blues have now paid a club-record fee – believed to be £97.5million (€115m) – to secure his signature.
Lukaku leaves Inter having led them to their first Serie A title in more than a decade, scoring 24 goals for the Nerazzurri in Serie A last term.
The 28-year-old brings strength, pace and supreme finishing to Thomas Tuchel's side – arguably the one area of Chelsea's squad that was lacking last term, albeit they still went on to win the Champions League.
Chelsea are not shy of attacking talent, with Timo Werner, Kai Havertz and Hakim Ziyech having all arrived in 2020, while Mason Mount thrived under both Frank Lampard and Tuchel.
With Lukaku on board, Stats Perform assesses how Chelsea might line up in 2021-22.
3-4-3: Edouard Mendy; Thiago Silva, Andreas Christensen, Antonio Rudiger; Reece James, N'Golo Kante, Jorginho, Ben Chilwell; Kai Havertz, Romelu Lukaku, Mason Mount.
Tuchel implemented a back three upon his arrival in January, and the formation switch helped turn Chelsea's fortunes around. This potential XI is based on the team Chelsea started in the Champions League final against Manchester City in May, albeit with Andreas Christensen – who enjoyed a brilliant Euro 2020 with Denmark and ended the season strongly for the Blues – in for Cesar Azpilicueta.
Lukaku could act as an out-and-out replacement for Werner, whose finishing all too often let him down last season. The Germany forward provided eight assists and netted six league goals, but from 79 attempts, giving him a shot conversion rate of just 7.59 per cent, while he only netted five of the 23 big chances that came his way in his maiden Premier League campaign. Lukaku, on the other hand, converted 25 per cent of his 96 shots in Serie A, scored 20 big chances from 39 and added a further 11 assists.
As demonstrated in the Super Cup against Villarreal on Wednesday, Chelsea need a focal point for their attack, and they now have just that.
3-5-2: Edouard Mendy; Thiago Silva, Andreas Christensen, Antonio Rudiger; Callum Hudson-Odoi, N'Golo Kante, Jorginho, Mason Mount, Ben Chilwell; Romelu Lukaku, Timo Werner.
Based on the system in which Lukaku excelled at Inter under Antonio Conte, the former Everton and Manchester United star could easily be used in tandem with Werner in a front two – and it could be to great effect for Chelsea, should he replicate his partnership with Lautaro Martinez, who scored 17 Serie A goals in 2020-21.
This formation would allow Jorginho to sit in front of the defence and distribute the ball forward – perhaps in the same mould as Inter's Marcelo Brozovic – while Mount can drop in to receive and drive forward with the ball. The wing-backs provide width, with Callum Hudson-Odoi potentially coming in to offer another attacking threat to balance out the extra man in midfield.
4-3-3: Edouard Mendy; Reece James, Andreas Christensen, Antonio Rudiger, Ben Chilwell; N'Golo Kante, Jorginho, Mason Mount; Hakim Ziyech, Romelu Lukaku, Christian Pulisic.
Another system which has been utilised by Tuchel in the past is the 4-3-3, which he often employed during his time at Paris Saint-Germain. The centre-backs are interchangeable – such is the depth of quality in that area for Chelsea – while James and Ben Chilwell would be the offensive full-back choices, with Azpilicueta certainly another option.
In midfield, Jorginho sits with N'Golo Kante given licence to hassle the opposition, freeing up Mount to be the creative fulcrum. In the forward line, Ziyech, who scored the opener against Villarreal before going off with a shoulder injury, excelled in a role off the right in his time at Ajax and his wonderous left foot can be lethal from wide positions, whether to cross or shoot. On the other flank, Christian Pulisic or Werner would provide the pace and tenacity to link up with Lukaku, who can either hold up the play or stretch the defence.
4-2-3-1: Edouard Mendy; Reece James, Andreas Christensen, Antonio Rudiger, Ben Chilwell; N'Golo Kante, Mateo Kovacic; Christian Pulisic, Kai Havertz, Mason Mount; Romelu Lukaku.
With so many options at his disposal, Tuchel is sure to chop and change. This formation would see Mateo Kovacic drop in alongside Kante, while Pulisic switches over to the right to make way for Havertz, who would occupy the number 10 position.
Mount has established himself as a pivotal figure, and would have the freedom to roam from the left, with Lukaku having three sharp, incisive playmakers behind him, though Werner could also be called upon to play on the left and inject even more pace. Indeed, this is the system in which he enjoyed some brilliant campaigns during his time at Everton, and is another example of his versatility.