They face the Czech Republic in the last 16 on Sunday and, with Wales or Denmark lying in store after that, could easily go on to reach the semi-finals. With each passing game, Barcelona are increasingly convinced by their hire. Arriving at zero cost, at the end of his contract with French side Olympique Lyon, he was a ripe opportunity on the market financially. Questions remained, in a sporting sense, despite 20 goals and 12 assists in 37 Ligue 1 games and only time will tell if he can propel Barcelona’s attack to a level capable of winning the Champions League. However, on paper, the Messi, Depay, Sergio Aguero front line has the potential to be Barcelona’s best since Neymar and Luis Suarez lined up alongside the Argentine.