A number of pundits have been left impressed by the Celtic Park atmosphere of late.
Rio Ferdinand is one and, during the Bhoys' 3-2 win over Malmo on Wednesday night, Dietmar Hamann was another.
Indeed, the former Liverpool and Newcastle United midfielder hailed Celtic's home ground on Twitter during their play-off first leg against their Swedish opponents and declared it one of the noisiest around.
Celtic Park was 'bouncing,' according to Hamann, although a late goal from Malmo took a little edge off of the celebrations.
Celtic Park is bouncing.— Didi Hamann (@DietmarHamann) August 19, 2015
Awesome place. One of the noisiest around. https://t.co/VBPkB9h315— Didi Hamann (@DietmarHamann) August 19, 2015
Meanwhile, former Celtic midfielder Marc Crosas has lost none of his love for the club and also cheered the Scottish champions on during their European clash on Twitter.
And the 27-year-old gave a confident prediction about the Hoops's Champions League fate.
Indeed, asked by a follower if Celtic can progress after the second leg in Malmo, Crosas had no doubts about what to say...
The Bhoys go into their second leg with a 3-2 lead but knowing Malmo have two away goals to their name. If they can keep a clean sheet like they did in Qarabag, though, Celtic will go through.