Issue number 174 of the CIES Football Observatory Weekly Post presents players who made their debut in the professional game after July 1st 2016 fielded during the current season in domestic league matches by a big-5 league club. The analysis notably highlights the key role played by the French top division in the promotion of young talents.

The French Ligue 1 holds record figures for both the number of debutants (29) and total domestic league minutes played (11,129). At the opposite end of the spectrum is the English Premier League: 12 debutants and 907 minutes. At club level, the record figures were observed at Montpellier, Metz, Toulouse and Espanyol for the number of debutants (4), as well as at Nice for minutes played (2,245).

The most fielded debutants per league are Malang Sarr (Nice) in France (1,964 minutes), Aarón Martín (Espanyol) in Spain (1,147 minutes), Pol Lirola (Sassuolo) in Italy (1,022 minutes), Ousman Manneh (Werder) in Germany (488 minutes) and Harry Winks (Tottenham) in England (357 minutes).