There is a famous lyric by American rapper Jay Z that can be suitably adapted for the final chapter in the career of one of Europe's elite strikers: ‘Allow me to re-introduce myself. My name is Luis Suárez.’ In the aftermath of Barcelona's humiliating 8-2 defeat to Bayern Munich in the Champions League, Gerard Piqué demanded change and an influx of new blood to rejuvenate a club in a steady decline. Among the scorers on that fateful night was Suárez, who dropped a shoulder to ease past Jérôme Boateng and fired a clinical shot into the bottom corner. The Uruguayan was still capable of genius but Barcelona and Ronald Koeman saw fit to make him one of the first casualties of a revamp. And six months later, along with a myriad of problems that are crippling Barcelona, the decision to allow the 34-year-old to leave may prove to be one of their biggest mistakes. Suárez's partner in football crime Lionel Messi knew it was a mistake and did not hide his disgust. “You deserved a farewell befitting who you are: one of the most important players in the history of the club, achieving great things for the team and on an individual level,” Messi wrote in a scathing Instagram post last September. “You did not deserve for them to throw you out like they did. But the truth is that at this stage nothing surprises me anymore.” Messi's message came with additional scorn as he was embroiled in a contract row with then-president Josep Maria Bartomeu but seeing a former team-mate join rivals Atlético Madrid would have sparked justifiable fury in the Argentine. Suárez had been close to leaving Spain and teaming up with Cristiano Ronaldo at Juventus but the proposed move collapsed amid allegations of cheating a language exam in a bid to be eligible for an Italian passport. Atlético reacted quickly, seeing off interest from Paris St-Germain and snapped up Suárez, who had no qualms about coming up against Barcellona and his La Liga revenge tour has been better than even manager Diego Simeone could have predicted. Suárez is the top scorer in Spain with 16 goals and despite Saturday's surprise defeat by Levante, Atlético are three points clear of neighbours Real with a game in hand. Barcelona, with their reliance on Messi higher than ever before, are fourth and eight points behind. While Liverpool and Jürgen Klopp have struggled without the passion and fervour generated by fans at Anfield, Simeone, a similarly intense and animated figure on the touchline, has rejuvenated himself with Suárez spearheading the attack. The underdog, counter-punching style Simeone has harboured at Atlético is less evident this season with Suárez forming a fruitful relationship with Portuguese prodigy Joao Felix. Felix plays slightly deeper which allows Suárez to keep the central defenders occupied with his movement, intelligence and work-rate that aligns with Simeone's ideals. "Luis generates fear in rivals no matter what competition it is," Simeone said in a press conference before Tuesday's Champions League match with Chelsea. "He has skills and qualities that attract a lot of attention from any rival."