Chelsea may have offered a significant clue over Tosin Adarabioyo’s future as Marseille step up their interest in the centre-back.
The 28-year-old has attracted attention from England and abroad, with Marseille currently showing the strongest interest. Benfica have also enquired as they assess replacements for Antonio Silva.
But the most intriguing development came at Stamford Bridge.
Valentin Barco was listed with Tosin’s No.4 shirt on Chelsea’s team sheet against Real Sociedad, despite Adarabioyo previously holding that number.
It does not confirm a transfer, but it comes at a fascinating time.
Marseille and Benfica are among the clubs interested in signing Chelsea defender Tosin 🚨
The centre-back was not included in today’s pre-season friendly squad against Real Sociedad ❌ pic.twitter.com/OB6TDbhADg
— Sky Sports News (@SkySportsNews) August 15, 2026
Tosin Adarabioyo Chelsea future gets major shirt clue
Chelsea officially listed Tosin as No.4 for their pre-season tour, while the club have warned that summer squad numbers are not necessarily final.
That makes Barco appearing with the shirt particularly noteworthy rather than definitive.
The timing only adds to the intrigue.
Benoit Badiashile is already closing in on a Napoli move, with Fabrizio Romano confirming that the Frenchman will undergo his medical this week. ReadChelsea has looked at how Badiashile’s impending exit accelerates Xabi Alonso’s defensive clearout.
Alonso inherited an extraordinary number of centre-backs and wants the group reduced considerably before the transfer window closes.
Tosin could therefore become another major decision.
Marseille emerge as strongest Tosin option
The Times reports that Marseille have shown the strongest interest in the former Fulham defender.
Benfica have also added Tosin to their list of options, which would potentially reunite him with former Fulham manager Marco Silva. His salary demands could make a move to Portugal more difficult, however.
Chelsea are currently prepared to keep Tosin, but that stance could change depending on how the final weeks of the window develop.
The Blues strengthened the position significantly when they signed Maxence Lacroix for around £52m this summer, a deal ReadChelsea previously identified as one likely to force difficult decisions across Alonso’s centre-back department.
Josh Acheampong is considered central to Chelsea’s plans, while Levi Colwill, Wesley Fofana, Jorrel Hato and Lacroix provide further options.
Badiashile is heading towards the exit.
Tosin now has Marseille and Benfica watching him.
And Chelsea have just put another player’s name alongside his No.4 shirt.
It may ultimately prove to be nothing more than a pre-season administrative decision, but with Alonso cutting his defensive numbers, it is a clue worth watching.
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