Benoit Paire has been barred from representing France at the Tokyo Olympics in July because of his "deeply inappropriate behaviour".
He has been criticised for his on-court behaviour, most recently for spitting at the Argentina Open in March.
The French Tennis Federation (FFT) said Paire's behaviour was "totally incompatible with the Olympic spirit".
Paire has lost nine of his 10 singles matches this season and has made repeated social media posts about how "boring" he finds the tour.
After his first-round exit in Monte Carlo on Sunday, Paire said tennis "does not make me happy anymore" and criticised the Covid-19 bubble protocols.