THE Celtic players wore black arm bands in honour of Bobby Carroll, the first man to score for the Parkhead club in Europe back in 1962 who sadly passed away this week, and not to mourn the departure of Ronny Deila as manager.

Yet, a fair few of those who featured in this timely rout of Motherwell before the presentation of the Ladbrokes Premiership trophy, will have shed a tear when the Norwegian left after two years in charge last night.

Those who have clamoured for Deila’s removal since the Champions League play-off defeat to Malmo last summer have long been of the opinion their manager isn't up to the job. It is, with the myriad losses, poor performances and valid criticisms of his reign, difficult to disagree with them.

To suggest, though, that his time in Glasgow has been without its successes is grossly unfair. This win, after all, rounded off his second league triumph of his tenure and saw his team lift their third trophy in total.

His final game, too, highlighted much of what the 40-year-old achieved in the role. His successor will benefit from his work greatly when he takes over in the coming weeks. There is clearly an abundance of exciting young talent at his disposal.

Kieran Tierney, who was handed his chance in the first team last term at the age of 17 and has this season established himself as a first team regular, opened the scoring with his first goal in senior football in the 22nd minute.

Tom Rogic, the Australian internationalist who has finally, after years or setbacks and frustration, fulfilled his massive potential under the guidance of Deila, followed that up with an opportunist close-range strike four minutes later.

Patrick Roberts has scored frequently since agree a loan move from Manchester City so the winger’s second half effort was little surprise. Still, the £12 million teenager ,who was persuaded to come north by Deila, has been one of the best performers of the 2015/16 campaign.

Ryan Christie, who has, in stark contrast, hardly featured since being recalled from a loan spell at Inverness Caledonian Thistle at the start of the year, netted his first goal for the outfit he signed for last summer. Stuart Armstrong and Mikael Lustig also got in on act.

Jack Aitchison - who, at the tender age of just 16 years and 71 days, became the youngest player in the 128 year history of Celtic to both make his debut for the first team and score – replaced Rogic with 15 minutes of regulation time remaining and rounded off an emphatic triumph with his first touch of the ball. The day couldn't have been scripted any better.

It was, with their fifth consecutive Scottish title having been secured with a home win over nearest rivals Aberdeen seven days earlier, a meaningless game and several key players weren’t involved. But much of what was on display, the showings of the kids especially, augured well for the future.

“If you look at the squad list today, there were so many young players in their twenties in there who have got a chance and impressed,” said Christie. “Kieran is the one who is right up there and is looked up to. But the manager has done well with promoting everybody through.”

Deila, whose name was chanted by supporters both during the game and after captain Scott Brown had received the trophy in the centre of the pitch, believes the kids he has promoted to the first team will contribute increasingly next term if fans are patient.

“Of course they can do,” he said. “But they need experience around them as well. You can see when they play freely how good they can be. You saw that today. They play without pressure and you see what is coming out.

“What is important is fans and everybody understands how important it is to give the young players and all the players all the support to get the best out of them. They have to manage to play under that pressure as well. That’s the next stage for the lot of them.”

If this 7-0 triumph was the perfect end to the season and to Deila’s reign for Celtic it was the worst possible way for Motherwell to round off their campaign. At one stage, their manager Mark McGhee was anticipating a repeat of the 9-0 reverse he suffered when he was the Aberdeen manager in 2010.

“Was I thinking about it?” he said. “Absolutely. When you are six down after 56 minutes of course you are. To get to 90 minute at seven wasn’t a bad result. It’s a horrible feeling, too right it is. It’s a horrible feeling to be 3-0 down at half-time and there’s nothing you can do about it.

“This has happened to me before. That day I felt I had a team that was capable of losing 9-0. I didn’t think I had a side that was capable of losing 7-0. That’s why I am more surprised than anything. I was optimistic coming here today. I didn’t see that coming. We didn’t pass the ball and we didn’t work hard enough as a team.

“We looked as though we had downed tools and were ready for the summer. I’m not going to dwell on it because they have done brilliantly. The performances have been flat out but we ran out of energy.”