Only four remain in the Scottish Premiership whilst the majority have moved down south or elsewhere in Europe to continue their respective careers.
Several academy youngsters have been allowed to leave the club having struggled to break into Ange Postecoglou’s first-team plans, while two players remain free agents following their release.
With the transfer window open until August 31, it appears the Hoops boss isn’t quite finished his outgoing business yet with at least another three players expected to depart.
GlasgowWorld takes a look at who has gone where...
1. Nir Bitton
The Israeli midfielder and quadruple Treble-winner has returned to his homeland to join Maccabi Tel Aviv on a two-year-deal.
2. Karamoko Dembele
Tipped for stardom by Parkhead officials, Dembele failed to build on his early signs of promise. Hampered by injury last season. Has since moved to France after joining Stade Brestois 29.
3. Boli Bolingoli
Nightmare spell at Celtic came to an end earlier this month as he joined Belgian Pro League side KV Mechelen on a two-year deal.
4. Tom Rogic
Fan favourite hasn’t been short of offers since leaving the Hoops at the end of last season. The Aussie midfielder remains unattached after turning down the advances of several A-League clubs. Photo: Alan Harvey - SNS Group