Elite Prospects already reported in May that HC Davos had made use of their option and extended the deal of Buchli. The defenseman has been part of HCD's organization since 2012.
Buchli played his first games for HC Davos in the 2017-18 season. This season, he recorded two goals and two assists in 18 games for the Rockets and also suited up in seven games for Davos. He missed half of the season due to a knee injury.