During that time, Kante must maintain his performance and at Al-Ittihad he must often provide interesting games so that monitoring from European teams will continue. In two years it's the World Cup and if Kante is called up again for the French national team then he has the same chance as now. Well, I think there's no harm in continuing to give the best for Al-Ittihad, especially since his arrival and also several other European players, they haven't provided anything special so far.
Mostly peoples are feeling after joining this league players career having negative impact, but now we have completely opposite of this because Kante doing good job with Al Ittihad and now Premier League clubs are having good interest after watching his improved performance, so things like these can go favourable for many other players as well for the better future and having improvement into their performance.
So I think that if De Bruyne moves to the Saudi league, he will also continue to play for the Belgium national team.