In
Nicolas Kuhn (£3m, Rapid Vienna)
Adam Idah (loan, Norwich City)
Out
Nathaniel Phillips (end of loan, Liverpool)
Yosuke Ideguchi (undisclosed, Vissel Kobe)
Kwon Hyeok-kyu (loan, St Mirren)
Adam Montgomery (loan, Motherwell)
Eli King (loan, Ross County)
Mikey Johnston (loan, West Bromwich Albion)
David Turnbull (undisclosed, Cardiff City)
Liel Abada (£10m, Charlotte)
Celtic total spent to date: £3m
Celtic total received to date: £10m
Celtic net transfer balance: £7m