Sassuolo have completed the permanent signing of Ismaël Koné from Marseille, triggering the buy option written into the loan agreement that first brought the Canadian midfielder to the club. The deal was confirmed on 2 February 2026, with the fee reported at around €10m, though some Italian outlets, including Fabrizio Romano, put the total package nearer €13m once the structure of the loan-to-buy deal is taken into account. Either way, it turns what began as a season-long loan the previous July into a lasting transfer.
The move ends a stop-start two years for the 23-year-old at Marseille, where he never settled. Koné made only a handful of appearances for the club after a training-ground row with then-manager Roberto De Zerbi, who wanted his midfielders playing quick, one- or two-touch football through the middle. Koné, who prefers to carry the ball and dictate tempo himself, clashed with De Zerbi over the instruction, and footage of the confrontation later became public when Marseille included it in a season review. He was farmed out on loan first to Rennes, then to Sassuolo, and never forced his way back into De Zerbi's plans.
For Marseille, the sale draws a line under a signing that simply didn't work out. They lose a talented if unpolished young international, but one who had fallen well outside the first-team picture and was, in practice, already gone in all but paperwork. Recouping a fee for a player who had made so little impact in Ligue 1 will be seen internally as a reasonable outcome.
Sassuolo, by contrast, get a midfielder who proved himself over a full season of Serie A football. Koné was a regular starter under head coach Fabio Grosso as the club secured a comfortable mid-table finish, and he chipped in more than his position would suggest: he scored the winner in a 2-1 victory over Atalanta, netting eight minutes after Sassuolo had been reduced to ten men, and was named man of the match for the display. He also found the net in a win over Pisa, taking his tally for the campaign into double figures across goals and standout performances by midfielder standards.
The move makes tactical sense for both sides. Koné's game is built on driving forward from central midfield, carrying the ball through pressure and arriving late in the box — exactly the freedom he was denied at Marseille. Sassuolo's possession-based approach under Grosso gave him license to do that, and the club clearly see him as a foundation piece in central midfield rather than a squad option, hence the willingness to make the deal permanent rather than let the loan lapse.
There is one complication for Sassuolo in the short term: Koné picked up a serious injury while on international duty with Canada at this summer's World Cup, in the match against Qatar, and has been sidelined since. Canada boss Jesse Marsch described the loss as a big blow for his team. Sassuolo will now have to manage his return to full fitness before he can pick up where he left off as one of their most productive midfielders.