Too often in Scotland, the concept of bringing a bit of attitude to a team tends to centre upon thundering into tackles, getting in the faces of the opposition, winding them up, needling them, ‘leaving a mark’.There was a good case in point just a matter of weeks ago in Rangers’ goalless pre-season friendly with West Ham at Ibrox. Cammy Devlin had come on as a sub against St Etienne a few days earlier for his debut after moving from Hearts and made a positive impression.Against the Hammers, he was like a man possessed. Up in Taty Castellanos’ grill and then playing the innocent party to referee Don Robertson. Charging around midfield Tasmanian Devil-style. At one stage, he looked like he might have sustained a significant injury when flying into a full-blooded challenge in the centre of the park. He did get taken off with a minor knock in the end.Punters lapped it up. His storming into challenges brought the biggest cheers of the day. ‘What’s wee Devlin like?’ fans asked each other, chortling merrily.There’s not so much laughing now. His red card against Jablonec last night when Rangers were 1-0 up in the first leg of their Conference League qualifying play-off and pushing to make it two has the potential to be costly ahead of a disquieting return fixture.Admittedly, it wasn’t malicious, even though his boot did make clear contact with Jiri Slama’s shin. Manager Derek McInnes’s assertion that Devlin was probably just trying to initiate contact with the opponent and win a penalty is almost certainly right. Celtic striker Camilo Duran’s display against LASK was a masterclass in leading by exampleHowever, it was a sending-off all day long and a stupid mistake, a horrendous misjudgment after just five minutes on the park.Devlin has stepped up a level in moving to Rangers, he has points to prove but, right now, the concern is that his eagerness to announce himself is going to end up leaving him lost in the maelstrom.From two starts in the league, he’s right up there at the top of the lists for fouls committed. His red card in Europe just came from a lack of focus, a lack of discipline and awareness. He’s already facing criticism from supporters and that can swallow you up pretty quickly in Glasgow if you don’t nip it in the bud.Rangers did – and do – need more attitude. More personality. There is no question about that. For several seasons now, they’ve been correctly picked apart for lacking character, lacking leaders, retreating into themselves when things don’t go their way, lacking fight and voice and mental resilience, lacking control.There are different ways to bring attitude to a team other than snapping at heels and being overtly aggressive, though. And that’s what Rangers need most of all. They need players who can show themselves, show their worth and their character, by working steadily, selflessly and with discipline to overcome adversity and obstacles.And they need players who can match the mindset required with the control and composure to do the right things at the right time in the split-second world of elite competition.Contrary to many of the messages coming out of Ibrox over the past months, there’s no need for them to be Scottish. They don’t need to know the Scottish Premiership. That stuff doesn’t matter if the make-up of the individual is right.Elsewhere in the city of Glasgow, just 24 hours previous to Rangers’ largely stodgy display against Jablonec, a certain Camilo Duran proved that.He’s a 24-year-old Colombian who has made his way to Celtic via Portugal and Azerbaijan. He wouldn’t know Fir Park from the Falkirk Stadium. Already, though, it is easy to ascertain that he exudes pure hunger and knows exactly how to channel it.It also looks like Celtic should enjoy him while he is here, because he’s got the eye of the tiger and no mistake, the body language that suggests nothing is going to stop him moving onto bigger and better things now he’s been given a suitable platform.His two-goal display against LASK in Champions League qualifying was simply a masterclass in leading by example, taking people with you and lighting up an entire stadium when it really matters most. Duran volleys in a spectacular goal for Celtic in their Champions League qualifying victoryIt was a performance dripping with attitude and personality, but in all the right ways. There were no histrionics. There was no reacting to the opposition. No throwing rattles out of prams or losing the rag. No playing to the gallery. No allowing himself to be thrown off-course. Quite the opposite.He set standards for his team-mates to follow and took a hard-fought, well-contested encounter by the scruff of the neck through sheer application, laser focus and strength of will.Much was made of his energy and workrate. Captain Callum McGregor drew attention to him running 90m to track back when Celtic were already 3-0 up. Manager Martin O’Neill talked of him performing his own role at right-wing and taking on a big chunk of Colby Donovan’s remit at right-back, too.It was all spot-on. Duran worked like a Trojan. His goals were just spectacular. What stuck out maybe most of all, though, was that he put a slightly difficult start to the match – a real test of his mettle – behind him and has accepted playing out of position without the slightest complaint.That’s what showing real attitude is all about. Brushing aside setbacks or disappointments, standing tall and believing nothing is going to get in your way.Duran had three real chances in the first 18 minutes against LASK. One shot on the turn was saved, an effort went wide and then he just failed to get the ball under control under pressure from George Bello with glory beckoning.Did he let the head go down, though? Never. Did he lose concentration? Not a bit of it. Was there any sign of a wobble? No way. Duran stuck at it and got better and better as the game went on. He kept trusting himself. Kept putting himself in the right places. Did his work in the most effective way imaginable. And got his reward.He came from Qarabag as a centre-forward, of course. His reaction to being used on the right? To turn in man of the match performances and let O’Neill know he is willing to play anywhere.That’s showing your attitude and your personality in abundance. In a quiet, assured, effective way that creates a solid base from which to go on and show your quality and wins the confidence and trust of others. Rangers midfielder Cammy Devlin is shown a red card in their match against Jablonec at Ibrox It’s an absolute dream for a manager and team-mates too. It is still early days, but Duran already has the air of the kind of guy you can turn to when you need help getting out of a storm. Devlin, on the other hand, often carries the concern he might just plunge you into one.At the moment, given the overall goal threat that exists within the Celtic side, the race for the title this season looks like it could be over pretty quickly.One thing Duran and Kasper Hogh have shown at Parkhead, however, is that just a couple of personality players with a positive effect on the dressing-room can change the feeling around a team and bring out the best in the players around them.That’s the effect Rangers manager Derek McInnes must desperately hope the high-ticket arrivals he is chasing for at the top end of the park will have.The Ibrox side are most certainly crying out for guys to bring a weapons-grade injection of attitude into their starting XI, but the contrasting stories of Duran and Devlin over the past few days show there are different ways to skin a cat in that regard.One looks like he might end up becoming a legend. The other needs to take a deep breath and make sure he doesn’t end up written off as a liability.