Kolo Toure showed he was going to be a hit for Celtic after his first day of training

You have to show them around, make introductions so they can feel at home. Who wants to do that?

It’s doubtful Kieran Tierney was overly concerned that Kolo Toure was going to cry and call his mum on his first day at Celtic. But given it was just the two of them at a deserted training ground, the teenager may have felt like at least making sure the new signing was doing okay.

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Five minutes into the session, and remember it was just the two of them, Tierney could see that not only did the former Arsenal, Manchester City and Liverpool defender was doing pretty well, but also that the 35-year-old was a top professional, a class operator and someone who the left-back was going to love playing beside and learning from.

Celtic are in Israel tonight and a clean sheet guarantees them Champions League football. With Toure at the back winning tackles, headers and organising all those around him, the chance of conceding three goals, which would mean Hapoel Be’er Sheva going through, is unlikely to say at the least.

The Ivorian is a beast of a man, intelligent, confident and will play his 500th club game this evening. It is fair to say he has made a huge impression on his team-mates in just a few weeks.

Tierney said: “Kolo is brilliant. I trained with him on his first day, it was actually just the two of us out there training, and even then I could tell just how experienced he was by the way he spoke to me.

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“From that first day I knew he was a great guy to have in the team and in the dressing room. The way he commands the team, how vocal he is all the time, is really impressive.

“I had a knock and he was just in so it only two of us out there. But even the way he went about his fitness training, so dedicated, so committed, was brilliant to watch. Straight away I knew what he was like and that he was someone we needed in the team. He’s been a great signing.

“Kolo is not arrogant at all. He’s actually the complete opposite to that. He couldn’t be more normal. He helps everyone young and old. He’s just a great player to have at Celtic.

“He is already a leader. His experience his second to one. He’s been to a Champions League final, he knows how to play at this level, he now has me and Eoghan O'Connell beside him, and it’s probably not easy playing with two young guys, and yet he helps us all the time.”

Toure is not just a defender. He likes to bring the ball out from the back, he was an attacking midfielder when he started in football, and one such move led the second goal in the first-leg against Hapoel.

Imagine Roy Aitken charging through a midfield and you're there.

Tierney said: “You saw with his runs last week that he is skilful. Kolo has a bit of everything. What he has achieved in football is amazing. It’s great to have him with us.”

Tierney himself is not bad. Indeed, he has yet to have a bad game for Celtic. The 19-year-old has been superb so far this season in defence and attack. There is little not to like about him.

Not only is the left-back a good player, he is also a supporter and so he gets how vital it will be for Celtic to make the group stages for the first time in three seasons.

Tierney said: “The first leg had a bit of everything. To conceded two goals after such a great first-half was a real disappointment, but it says a lot about us that we got another two and won by three goals.

“Where does this put us? Well, in terms of a two-legged tie it’s a good result for us but anything can happen. You saw that last Wednesday at Celtic Park. We have to prepare properly.

“It does look like there is a different mentality about the team this season. That has been reflected in the results so far, which is only a good thing.

“The manger does talk to us about being mentally prepared. You certainly always have to be positive before games and you could see that in the last game when we scored three in the first-half.

"We could have crumbled after that but got together as a team and got those other two goals.

“We do put the fans though it in these games. It must have been hell for them. It was hell for us. However, it was great the way we bounced back and now, hopefully, we can finish the job.

“If we perform on Tuesday and get to the group stages, it would be brilliant. I think that is where Celtic belong.”