With Strømsgodset manager Ronny Deila replacing Neil Lennon as Celtic manager, the Norwegian set about moulding his own squad at Celtic Park.
In came Craig Gordon, Jason Denayer, Mubarak Wakaso, Alexander Tonev, Jo Inge Berget and John Guidetti, and whilst results were initially disappointing, six wins from the last seven games in all competitions show that Celtic are just starting to hit their stride.
Guidetti has hit nine goals in ten games, and it's been reported in recent weeks that Celtic want to tie up his permanent signing, with the Manchester City striker linked with a £3m to £5m deal.
However, the Swede's success in Scotland means that Serbian striker Stefan Scepovic - another summer signing from Deila - has struggled to make an impact.
Scepovic, 24, hit 23 goals in just 39 games for Sporting Gijon last season, and whilst Celtic were desperate to sign him this summer, he appeared set for Getafe on September 1st, only for that deal to collapse and leave him to sign for Celtic on September 2nd.
However, whilst he arrived with a big reputation for his goalscoring exploits in Spain, Scepovic has scored just twice for Celtic, playing second fiddle to Guidetti for most of the campaign.
Now, reports in Scotland suggest that he could be set for an early exit from Celtic Park, with La Liga side Levante looking to take him back to Spain in January, having been given a cash injection ahead of the transfer window.
A £2.3m summer arrival, giving up on Scepovic after only a few months would be a disappointing for Deila, but it may be best to cut their losses and put the money towards a permanent move for Guidetti.