Manuel Pellegrini is about to begin his 37th season as a coach.
The 70-year-old Chilean has had a remarkable career, managing clubs in six countries, winning trophies in five - and he estimates he has been in charge for more than 1,500 games.
Pellegrini is best known in England for his stints at Real Madrid, Manchester City - where he won the Premier League, EFL Cup and took the club into their first Champions League semi-final - and West Ham, where was sacked after 18 months in charge with the club 17th in the table.