By Ewan Murray Portugal return to Euro 2024 action on Monday evening when they face Slovenia in the last 16 in Frankfurt. Having lost 2-0 to Georgia in their final group game, albeit with a much-rotated team, Portugal can ill-afford complacency as they kick off their knockout stage campaign. The Euro 2016 champions haven’t been entirely convincing in Germany so far, but are one of only five sides that won two of their group stage games. Cristiano Ronaldo has been at the centre of things for Portugal, but not in the way he would have liked. The 39-year-old’s tantrum after his substitution again…