Hazard has recovered from ankle surgery but Courtois thinks it will take his Chelsea team-mate time to get to his top level of performance.
The Belgium worldwide has not featured for the Blues this season after undergoing ankle surgery in the off-season, although he returned to action for his national side after coming on as a substitute in the 2018 World Cup qualifying wins over Gibraltar and Greece.
'But we can not forget he was injured for four months, he had surgery.
'I hope we can see the best Eden Hazard very soon'.
Chelsea could hand debuts to Deadline Day signings Danny Drinkwater and Davide Zappacosta this weekend, with Antonio Conte having been frustrated in his pursuit of other targets during the summer window.
"The market now is a bit insane", said Courtois.
Chelsea play Qarabag in the Champions League group stage at Stamford Bridge next Tuesday night and Conte is debating whether that game could be a better option for Hazard to make his return in, according to the same report.