Celtic fans have unveiled a Muhammad Ali banner ahead of this evenings Europa League clash with Cluj - after they were knocked out of the Champions League and into Europe's second tier.

The Hoops are out for revenge this evening against the Romanians who conquered them in the Big Cup qualifiers earlier this season.

And the defiant Green Brigade insisted they're fine with taking on this season's Europa League - but they'll be back in the big time next season.

Glasgow Times:

The banner read: "Ain't nothing wrong with going down, it's staying down that's wrong."

The quote is from the great boxer Ali when discussing his time as a superstar athlete.

Fireworks were also set off within the Green Brigade section - risking another UEFA punishment.

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Celtic have been approached for comment by Times Sport.

The Hoops were done for a similar offence during their match with AIK in Sweden earlier this year.

Cluj managed a 4-3 win over Celts at Parkhead earlier this year and the pair have been drawn against one another again in Group E of the Europa League.