Rangers face Osijek in the second round of their Europa League tie on Thursday.
Carlos Cuellar has wished Rangers the best of luck on Twitter as they prepare to face Croatian side NK Osijek for the second time in a week, with the third round of Europa League qualifying the prize.
Rangers boast a 1-0 first-leg advantage over Osijek after Alfredo Morelos headed home from close range last time out in Croatia, after an excellent cross from new captain James Tavernier.
New manager Steven Gerrard has already taken Rangers a lot further in Europe than Pedro Caixinha did last season, when they were knocked out of the first round by minnows Progres Niederkorn.
Rangers will be looking to protect and add to their lead on Thursday at Ibrox, and Cuellar wished them the best of luck, 11 years after his Gers debut against Inverness on August 4 2006.
Former Aston Villa defender Cuellar clocked up 55 appearances for Rangers, spending only one season at Ibrox before joining the Midlands club in 2007.
Cuellar, 36, who is currently turning out for Israeli side Beitar Jerusalem, lost to Georgian side Chikhura Sachkhere in the first round of Europa League qualifying – and Rangers will meet them or Maribor in the third round.
That is if they beat Osijek on aggregate, who were unlucky not to find the back of the net in the first leg.
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