Not since the great Jock Stein back in the mid 1960s and early 70s has a squad been built which completely dominates the Scottish football landscape, and the Celtic fans are lapping it up thanks to Brendan Rodgers.

Stein's team won nine in a row and reached two European Cup finals in that halcyon period. Rangers eventually broke that stranglehold and stopped ten but it looks extremely doubtful, bordering on impossible, that anyone can stop Celtic and Rodgers now reaching double figures.

But just how has he turned a Celtic squad, which looked ragged and ripe for the picking in Ronny Deila's final season, into domestic invincibles?

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It certainly hasn't been excessive spending. Moussa Dembele has proved to be the bargain of the century at £500,000. Scott Sinclair, who looked a lost soul previously at Aston Villa, was also an astute bit of business at just £3m. But the majority of the squad has been inherited from Deila. The upturn in fortunes of most of those players has been incredible to see.

Rodgers built a superbly creative team at Anfield. Don’t forget, he was probably a Steven Gerrard slip away from winning the Premier League. Gerrard called Brendan a "fantastic man-manager" in midweek before Celtic's Champions League romp against Astana. That says it all.

Guys like Scott Brown had been savaged the previous season. His legs had gone and he was finished. Stuart Armstrong was another; not Celtic class and the club was too big for him.

But both have been rejuvenated under Rodgers. James Forrest and Callum McGregor, two favourite whipping boys previously of the Celtic support, again have turned into key players. Filled with confidence by an arm around the shoulder and specific coaching every day. Craig Gordon has been turned from a goalkeeper who just shelled it up the park, into a sweeper keeper comfortable in possession. His confidence on the ball creates an overload at the back by becoming an extra outfield player. That has been a key component in Celtic's smooth style of play under Rodgers. Credit must also go to Stevie Woods, the Celtic goalkeeping coach, too, for Gordon's transformation.

Rodgers is a teacher both on and off the pitch. If you don't sit and listen you will be out the classroom. Indefinitely. A withering shot across Leigh Griffiths' bows about lifestyle choices has already been taken firmly on board by the talented, if sometime wayward, striker. He has looked a different player since. But the key for me is the fact that the entire squad have now bought into the thing that Rodgers is selling, namely, the bigger picture.

Celtic have now built almost two squads and that requires not only skilful coaching but serious man management qualities. How do you keep 18-20 players happy? Players' egos get dented when they are not playing. Trust me they do. My own was like a battered 40-year-old Cortina by the time I’d hung my boots up. Everyone wants to play, so it takes major communication skills from a coach to keep them motivated. It's very difficult because guys who aren't playing tend to rock the boat.

The game at the weekend was a perfect example of the strength in depth Rodgers has built up. A very young back four was given an opportunity to play in a high-profile game and were rewarded for the hard work they are doing on and off the field. If you have young players training well, standing out in the U20s and making the sacrifices off the pitch that Rodgers demands you need to reward it. It's important to do that as when these young guys inevitably drop back out, they know that there are going to be more opportunities in the future. They see a pathway. He is basically schooling these youngsters at senior level. He is looking for the next Kieran Tierney to come through and you only see that by testing them physically and mentally in first-team conditions.

Guys like Griffiths and Sinclair know they are being rested for a reason. I bet there were no rumbles when they found out they were not playing. The players are all on board with Brendan's philosophy and that comes from winning games. They trust him to do the right thing for them individually and the team. With guys like Boyata, Sviatchenko and Dembele still to come in, Celtic truly are formidable opponents.

The signing of Patrick Roberts will add a little sprinkling of magic dust to the squad and help them make a bigger impression in the Champions League. The fact Celtic are set for another £30m plus in revenue seems to have irked a few people in terms of it being bad for Scottish football. I don't understand that argument at all. It's ludicrous actually. Firstly, in the last 32 years the league has been won by either Celtic or Rangers. It has been dominated for a long time by two clubs. So it's not as if it's something new and kills Aberdeen, Hibs or Hearts' prospects of winning the league.

The main challengers should be Rangers, but the simple fact is that while Celtic have run their club properly from top to bottom, Rangers haven't. That has enabled Celtic to put clear daylight between them and their biggest rivals on the park and off it. So instead of saying that Celtic earning all this money, earning being the key word here, is bad for our game, how about the fact that other clubs frittering money away on and off the park has contributed to that gap growing. A club should not be punished or frowned upon because they have been successful. But maybe that's a Scottish mentality thing in that we like to see people doing well, but not too well. Not to mention the £365,000 that will go into the youth development coffers of the other 11 Premiership clubs because of that success.

That has to be good for our game. It is up to other clubs to raise their standards and get closer, rather than Celtic dropping back down. Under Brendan Rodgers that simply will not happen anyway. He will keep pushing and driving this Celtic juggernaut. It’s up to others not to be left behind.