Bayer Leverkusen sporting director Rudi Voller warns there's "no comparison" between Rangers and their upcoming Europa League foes Inter.
The German side took a 1-0 win over Steven Gerrard 's men on Thursday to advance to the quarter-finals of the competition with a 4-1 aggregate win.
And Voller is expecting a far tougher test against Antonio Conte's outfit, who he admits are miles ahead of Rangers.
He told Gazzetta dello Sport: "We need to be realistic, we know that Inter are strong.
"They finished a point behind Juve and ended the season strongly.
"There's no comparison with Rangers, the Nerazzurri have players with class, a great coach, they concede very few goals and they have a really well-matched strike pairing.
"The strength of (Romelu) Lukaku with the speed of Lautaro (Martinez) can hurt anyone on the counter-attack.
"We know it's going to be difficult.
"They're complete in every department, with players who all know their roles inside-out.
"No-one wants to concede goals, ourselves included, but if Inter were to take the lead it would be difficult to recover.
"We'll see what happens, we'll play our game against a great opponent in the knowledge that we'll have our chances."
