[1] According to Muftić, he first got approached at his Sarajevo apartment in the early morning hours of Thursday, 13 November 1969—three days prior to the upcoming league fixture versus Olimpija—by a male individual, previously unknown to him, who showed up at his door introducing himself as NK Olimpija's board member and asking if they can talk.
At that point, the two arranged to meet around noon at Kristal-bar, a kafana in Ilidža on the outskirts of Sarajevo, where the individual—NK Olimpija board member as well as the Ljubljana Credit Bank (Ljubljanska kreditna banka i štedionica) management board member Anton Franetič—would eventually get around to making FK Sarajevo's goalkeeper Muftić a monetary offer in exchange for throwing the upcoming match between the two teams.
[1] According to the offer, Muftić was to receive YUD10,000 (new dinars) if the match finishes as a tie and YUD20,000 (new dinars) if NK Olimpija wins with Franetič even musing about the possible contrived behaviour Muftić could opt for during the match—either purposely not attempting to make a save during a shot on goal or intentionally fouling an Olimpija player in the penalty area that would hopefully lead to the referee awarding a penalty shot.
In turn, Maglajlić alerted the authorities who put together a sting operation, instructing Muftić to wear a recording device during his subsequent meetings with Franetič.
[1] Sarajevo ended up winning the match 4-1 while goalkeeper Muftić was forced to leave the contest early due to picking up an injury after colliding with Olimpija player Radoslav Bečejac.