Morientes didn't break 20 throughout his career, which I found surprising.
Very good shout, Di Vaio scored 24 for Bologna in 08/09.
I didn't realise Belotti had been scoring regularly for so long. He scored 26 for Torino in 16/17.
Viduka got closest, with 20 for Leeds in 02/03.
Never got higher than 18 in a season.
He never did it for Marseille, but did score 24 for Toulouse in 08/09.
He got very close, scoring 23 in consecutive seasons for Parma.
7 left to get, with no more players remaining who did it in Ligue 1 or Serie A.