On Tuesday night, all eyes will be on goal machine Erling Haaland in the first leg of Manchester City's Champions League semi-final against Real Madrid.
With 51 goals to his name this season, much of the talk ahead of the game at the Bernabeu will centre around how Real can nullify the threat of City's outrageously prolific striker. But for City - and boss Pep Guardiola in particular - there is one player who is just as important as Haaland, an unsung hero whose contribution will be equally significant in Madrid.
Ilkay Gundogan was Guardiola's first signing at City in 2016 and has shown his enduring class ever since, scoring twice here to keep the champions on course to retain the Premier League title.
