Republic of Ireland Under-21 international Liam Scales has completed his move to Celtic on a four-year deal for an undisclosed fee.
As expected, the Europa Conference League play-off defeat to Flora Tallinn last night was the versatile defender's last appearance for the Hoops.
Scales made 51 appearances, scoring four goals, since joining from UCD ahead of the 2020 season, impressing as a wing-back or as part of a back three.
Celtic manager Ange Postecoglou said: "Liam is a young player who has impressed us and is someone who we think has the potential to have a big future at Celtic. He is an athletic defender who has the ability to play in a number of positions.
"As I have said before, everyone at the club has been working hard to add depth and quality to our squad and in signing Liam I think again we have made good progress. We all look forward to welcoming Liam to Celtic and to start working with him."
Celtic face Rangers in the first Old Firm Derby of the season this Sunday and Scales may be in line for a place int he matchday squad as first-choice left-back Greg Taylor suffered a shoulder injury in the Europa League play-off against Alkmaar.