Celtic are drawn to face Barcelona, Manchester City and Borussia Monchengladbach in Champions League Group C.
Celtic will aim to sign one more player before next week's transfer deadline, says chief executive Peter Lawwell.
Ross County complete the signing of central midfielder Tim Chow on a two-year contract, following his exit from Wigan.
Inverness CT manager Richie Foran signs up French forward Lonsana Doumbouya on a two-year deal.
Audio & Video
Watch the trailer for Scotland's Game, a new four-part documentary series on the social history of Scottish football, which starts on Thursday.