It has rumbled on throughout the summer, but Celtic boss Brendan Rodgers finally got his man earlier this week with the arrival of Adam Idah from Norwich City.
The Republic of Ireland international was confirmed as a Hoops player on Wednesday evening, returning to the club following a stunning loan spell last season saw him score nine goals in 19 appearances - and the Celtic faithful are delighted to see their goal hero return to the East End of Glasgow.
With a transfer fee of £8.5million plus add-ons widely reported, Idah has become one of the most expensive recruits in the club’s history - but where would he place on the list of Celtic’s most expensive signings ever?
Here is the full list of Celtic’s top 20 most expensive transfers in history, from 20-1.
13. Eyal Berkovic - £5.75million
Signed for a record fee after a training ground clash with John Hartson at West Ham United, the Israeli midfielder won the Scottish League Cup with Celtic in 2000. He was a bit of a flop though, in truth. He struggled to convince fans of his talents and left to join Blackburn Rovers on loan after two years with the Hoops. Joined Manchester City on a permanent deal from Celtic in the summer of 2001 for a cut-price for a £1.5 million. Now 52, he was most recently the general manager of Hapoel Petah Tikva in his native Israel. | SNS Group 0141 221 3602
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14. Cameron Carter-Vickers - £6million
Signed on a permanent deal two summers following a hugely impressive loan spell, the American has been worth every penny for the Hoops and has only seen his value to the club increase since his arrival. | SNS Group
15. John Hartson - £6million
The big Welsh centre-forward was brought to Celtic Park by Martin O'Neill, who spent big to prize him away from West Ham United. Hartson scored 109 goals in 201 games during his spell in Glasgow and was pound for pound one of the club's best signing during the early 00s. | SNS Group 0141 221 3602
16. Chris Sutton - £6million
After struggling at Chelsea, the Hoops offered Sutton an escape route - and he grabbed it with both hands. Won eight domestic trophies with Celtic, scoring 86 goals in 199 appearances. Top signing. | SNS Group