That’s the concern raised by former Arsenal midfielder Stewart Robson, now a regular pundit for ESPN FC.
World Cup winner Kante has been one of the Premier League’s best players for the past three seasons, helping Leicester City to an unlikely title triumph in his first season.
And the tenacious ball-winner has been just as crucial since a £32million switch to Stamford Bridge, winning the league in his first season before helping the Blues to the FA Cup last term.
Frenchman Kante – who helped lead his country to a World Cup success in Russia – has been linked with Paris Saint-Germain and Barcelona this summer.
The 27-year-old is said to be PSG’s top target while recent claims in Italy have suggested that Barca are just as keen on the Chelsea star.
And Robson believes Kante’s future in west London is uncertain after new manager Maurizio Sarri welcomed his first signing, Jorginho, in a double announcement at the weekend.
Defensive midfielder Jorginho – a long-time Manchester City target – signed in a £57m deal from Napoli to become the club’s first addition of the summer.
And on what Chelsea can expect from their new man, Robson said: “A player that sits in front of two centre halves and tries to dictate the ball.
“I wouldn’t say he’s the best defensive player that you’ve seen.
“My worry is, if he’s going to play there – what’s Kante going to do? Is he going to go? Do they know they’re going to sell him?
“I can’t see the two playing together. That’s a big problem for Chelsea fans.”
Another player fearing for his future in the team could be Victor Moses, suspects Robson.
Sarri’s predecessor played with a back-three that incorporated wing-backs, most commonly Moses on the right and Marcos Alonso on the left, whereas the new manager is expected to stick with his favoured 4-3-3 system.
Robson added on Sarri: “He played with a normal back four. The wide players were attacking players and Moses was an attacking player to start with.
“I think Alonso could play as a left-back, I don’t think there’s any problem with that. The Napoli left-back used to get forward with great pace and get crosses in and Alonso can get back as well.
“Moses will be the player that will have more of a worry getting into the side at right-back but Sarri is a top class manager.
“He developed a style of play that was enjoyable to watch and successful and he had wide players that made different runs to the runs other people make.
“They were almost running into areas where there wasn’t enough space but the balls still kept being played in to them and they still got on the end of things. I’m looking forward to watching Chelsea play this season.”