Update: Napoli have more! And definitely more real Roma guys. More than Matic and Maitland-Niles, anyway.

Juan Jesus, Lukaku, Spinnazola and Mario Rui

I watched a bit of Lyon-Eintracht after the Roma match. Does Lyon have the most former-Roma players? Do any other teams have as many former players from the same team?

Matic, Maitland-Niles, Veretout