At club level 2008 was similarly significant for Nkoulou, with his professional debut for French outfit AS Monaco that September marking the start of a three-year stay in the principality.
Stints at fellow Ligue 1 giants Marseille and Lyon followed before a switch to Italian side Torino in the summer of 2017, initially on loan, where he made more than 100 appearances.
Following his departure from the Stadio Olimpico Grande Torino at the end of last season, Nkoulou was linked with a host of Premier League clubs, but has opted to join the Hornets.
Having taken one of the two remaining spaces in Watford’s playing squad for this season, he will wear the number 13 shirt during his time in Hertfordshire.
Welcome to Watford, Nicolas!