At the turn of the year, Arturo Vidal’s Bayern Munich career appeared to be on a knife-edge. Reports emerged of late night – or, rather, early morning – partying and a lack of application in training, while his failure to initially replicate his form for Juventus and Chile suggested fears over his suitability to Pep Guardiola’s style of play had some founding. But as the season nears its end, no player is more important to Bayern’s silverware hopes.

The Chilean powerhouse netted the only goal of a first leg that was far tighter than it ought to have been, and it was he who stepped up when another Portuguese disaster appeared to be looming at the Estadio da Luz. At this stage last season, Porto scored three times on home turf, and increasingly characteristic poor defending from Bayern gave Benfica similar first-half hope this time around. Until Vidal snuffed it out.

Though both goals were markedly different – one a second minute header after a sniping run into the box, the other a fiercely hit half-volley that almost ripped the net apart – both shared a similarity. They were born from an aggressively roaming midfielder who had been freed from the shackles of both defensive work and pure possession control; opportunistic, poacher’s efforts. Both goals were typical of Vidal, but perhaps not typical of Guardiola.



The 28-year-old never quite felt like the perfect fit for a coach who has more regularly turned to pint-sized creators in the centre of the park than bulldozing midfielder runners, while even as recently as the weekend there was clear frustration on the face of Vidal as he was withdrawn within half-an-hour of the win over Stuttgart after picking up an early yellow card following a typically over-zealous tackle and all-action cameo.

“He brings an aggression and special mentality to the team,” club legend Oliver Kahn remarked in the summer. “But he does not really fit into Guardiola's philosophy.” Too hot-headed, too much of a risk-taker, too direct. Yet it is that very streak of pure, simmering aggression that is proving to be the perfect antidote to a season that might otherwise have petered out already, and a style of play that is not quite as dynamic as the fans demand it to be.

To his credit, Guardiola had recognised Vidal’s ability to transform Bayern’s play from ponderous and predictable to razor-sharp and breathless. He had used the Chilean as a modern “libero” briefly – to especially good effect against Borussia Dortmund – but now he has him lining up closer to the side’s not-quite-as-prolific-as-usual strike duo. Importantly, he brings verticality to a style of play that can become a little too side-to-side.

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