Adam Montgomery has rejoined Livingston on a season-long loan for the 2026/27 campaign. The defender returns to Livingston from Premiership Champions, Celtic. During the previous season, Montgomery's time with Livingston was affected by injury, and he made only eight appearances before being recalled by Celtic in January. Livingston Football Club announced the signing via their official social media on August 18, 2026.

According to Record Sport, Adam Montgomery is set to join Livingston on loan for the season. The loan move will give Adam Montgomery the chance to potentially make the move to Livingston permanent. Martin O’Neill reportedly has not prevented Adam Montgomery's move, particularly as there is only a year remaining on his current contract. Adam Montgomery spent last season on loan at Livingston, making nine competitive appearances with a goal and an assist before a calf injury in October caused the loan to be ended early and his return to Celtic to rehabilitate.

Adam Montgomery's loan spell at Livingston from Celtic has been terminated after the defender suffered a complex calf injury. The injury is a recurrence of a previous issue and is expected to keep him out for the remainder of the season. The early termination has freed up finances for Livingston, who are now pursuing a player from Finland as a replacement.