He quickly displaced Comorian international, Ali Ahamada, and with a series of excellent displays, helped the club to a credible 9th-place finish.

[citation needed] In July 2015, Boucher decided against staying at Toulouse and transferred to Ligue 2 club Auxerre,[3] where he would be the undisputed first choice goalkeeper.

He expressed his desire to one day return to the top flight, of which he knew he was capable of playing in, but believed remaining at Auxerre for the near future would be more beneficial for his development.

[4] At the beginning of the 2018–19 season, he lost his starting place at Auxerre to Quentin Westberg in the league and to Sonny Laiton in the Coupe de la Ligue.

[8] On 1 July 2024, after spending the second half of the 2023–24 season on loan at Troyes, Boucher was signed on a permanent deal by the Ligue 2 club.