Celtic chief executive Peter Lawwell has revealed how he considered an audacious move to bring Henrik Larsson back.
Lawwell sounded out the Champions League winning Barcelona striker and his agent Rob Jansen but was made aware straight away that the striker was joining Swedish side Helsingborg.
Lawwell told the Daily Record: 'I spoke to Henrik and his agent Rob Jansen but three words into it I was told `no'.
'So there was no point pushing it any further as Henrik had made up his mind.
'All I'll say is if Henrik had shown any interest in coming back we'd have been keen to talk to him.'
Lawwell wants Stilian Petrov back at the club for pre-season training despite the midfielder handing in a transfer request.
Lawwell added: 'We don't want to sell Stilian Petrov, we want him back here for pre-season. Can his mind be changed? I just want him to see sense and come back.'
Lawwell also wants Shunsuke Nakamura, Neil Lennon and Roy Keane to be back for the start of pre-season, adding: 'We expect him (Nakamura) back and we want him back - in fact it's the same for Petrov, Lenny and Roy.'
Celtic are still interested in Sparta Prague defender Michal Kadlec while Brazilian winger Denilson is the latest name to be linked with the Scottish champions.
Denilson is at French side Bordeaux, whose chairman Jean-Louis Triaud said: 'He is in contact with Celtic and Tottenham.'
The Hoops are currently trying to finalise their pre-season plans but they could be in line to face Chelsea and Manchester United while spending time in Poland and America.