How can Chelsea afford Rogers?

It's not just about keeping players happy - Chelsea must also sell players to keep the books balanced.

The £117m fee represents a substantial outlay on top of the £47m spent to sign full-back Marco Palestra from Atalanta, as well as the potential arrivals of defenders Pep Chavarria from Rayo Vallecano and Maxence Lacroix from Crystal Palace.

In addition, midfielder Valentin Barco is expected to join from Strasbourg, though Chelsea have yet to confirm the deal.

It took a league-record £300m in player sales last season for Chelsea to comply with the Premier League's financial rules, which are due to move from a Financial Fair Play-based system to a Squad Cost Ratio (SCR) model this summer.

Uefa, however, represents the biggest obstacle to Chelsea's continued spending after fining the club £26.7m for breaching its rules last summer, while Aston Villa were also fined and are under the same scrutiny, which led to Morgan Rogers' sale.

Chelsea were again found to have breached European football's governing body's regulations this summer, but the financial picture improved significantly, resulting in a fine of just £2.6m. Most of that amount will be waived if the club continues to improve its finances.

With five new signings expected this summer, Chelsea will want to sell or loan out at least a dozen players from the 37 senior options on their books, and for as much money as possible, to keep their accounts healthy.

They have already sold Marc Cucurella to Real Madrid, Andrey Santos to Manchester United, Tyrique George to Everton and Jimmy-Jay Morgan to West Bromwich Albion for a combined fee of more than £120m.

Generating transfer income has become increasingly important for Chelsea, who lag behind their traditional big-six rivals in commercial and matchday revenue, while also falling behind in broadcast income after missing out on Champions League football in three of the past four seasons.