Mikael Lustig could be set for an early return to Scotland, and a clash against Rangers, with new side Gent in the Europa League.
The right-back, who left Celtic after seven and a half trophy laden years, could be up against the Ibrox side if both clubs get through the next round of qualifiers.
Should Rangers overcome Progrès Niederkorn, Gent is one of a number of clubs they could face if they beat Romanian outfit Viitorul Constanta in their tie.
Rangers, of course, have history with Progrès, having suffered a humiliating 2-0 defeat to the Luxembourg minnows in 2017 to exit the Europa League 2-1 on aggregate.
In one of the more enduring images of his time, Pedro Caixinha decided to face the angry travelling support after the capitulation.
Standing in the middle of a hedge, the then Ibrox boss was pictured wagging his finger at furious fans as a concerned official made a failed attempt to drag him away and salvage his and the club’s dignity.
Lustig would no doubt relish a return to Ibrox.
The Swede loved nothing more than getting one over on Rangers and provided more than one iconic moment, from his policeman’s hat celebration to the cherry on the cake mazy run and goal in a 5-1 win at Ibrox in April 2017.
Another former Celt who could help eliminate Rangers is Erik Sviatchenko.
The Danish centre-half returned to Midtjylland after his short spell in Glasgow. He retains a fondness for his former club and would be keen to deliver a blow to Rangers’ European hopes should the chance arise.
Other potential opponents included Wolves, Polish giants Legia Warsaw and AZ Alkmaar, who finished fourth in the Dutch Eredivisie last year.
As always, good luck to our former Celts should they need it!