Glasgow: It is a tale of two managers in Glasgow with the Old Firm incumbents suffering vastly differing fortunes.

For Celtic manager Brendan Rodgers, whose side travel to take on Kilmarnock on Saturday, it is undoubtedly the best of times.

The 44-year-old’s stock continues to rise following his side’s 5-0 demolition of FC Astana in the first leg of their Champions League play-off round on Wednesday that has all but clinched a place in the lucrative group stages of the competition.

It is the latest stage in the revival of the Northern Irishman’s career, who has been rebuilding his reputation at the Glasgow giants after being sacked by Liverpool in October 2015.

After seven months out of the game, Rodgers was offered the chance to lead a revolution at Celtic and to say his first season in charge was a success is an understatement.

The former Liverpool and Swansea manager guided them into the group stages of the Champions League at the first attempt while domestically Celtic were simply invincible as Rodgers became only the third man to lead them to a treble.

In the league, Celtic became the first Scottish side to finish a 38-game season without defeat as they set new records for points, goals scored and number of victories, easing to a sixth title in a row.

It was a first league title for Rodgers, having gone agonisingly close when his Liverpool team narrowly missed out on the Premier League in the 2013/14 campaign.

Steven Gerrard’s infamous slip in the home defeat to Chelsea took the momentum out of their title charge and, after finishing sixth the next season, Rodgers was sacked during the following campaign.

The legendary former Liverpool captain, who was in Glasgow to watch the thrashing of Astana, had nothing but praise for his former manager.

“He’s top drawer. He’s very slick on the training ground, he’s a fantastic man manager, he makes you feel good and confident all the time,” Gerrard told BT Sport.

“He helped me an awful lot. People might not think that but he helped break my game down and change my game so you’ve got to give him a lot of credit.”

For Rodgers’ Rangers counterpart, Pedro Caixinha, it is the worst of times.

The Portuguese manager arrived in Glasgow in March full of self-confidence and promises but has so far failed to deliver.

Caixinha’s rebuilding work at Ibrox saw him add nine players to his squad in the summer as the 46-year-old looked to stamp his authority on the club he joined from Qatari side Al Gharafa,

However, they suffered a humiliating Europa League exit to Luxembourg minnows Progres Niederkorn at the first hurdle while a defeat to Hibs last weekend means they are already playing catch up with Celtic after just two games.

Pressure is mounting on Caixinha from the supporters ahead of their match with Hearts on Saturday.

With Celtic on the verge of getting access to a 30 million pounds (Dh141.9 million) Champions League jackpot to increase the financial gulf between the clubs, the Portuguese manager knows he must try to find a way to bridge the gap on the pitch.