Newcastle United took the surprise decision to move Mapou Yanga-Mbiwa on last summer, and he has not looked back since.
The French defender was sent on loan to Roma where he played Champions League football, and played enough games to activate a clause in the agreement to sign permanently with the Italian side.
He has become a key part of the Roma team, making 37 appearances for them in total across the season.
On Monday he scored a crucial goal for them on their final day of the season, a 2-1 victory over bitter rivals Lazio, which secured their automatic Champions League qualification.
The 85th minute header was his first goal for the club, and he could not have timed it better as without it Roma would have faced going through the qualifiers.
Speaking after the game, the 26-year-old said he was eyeing silverware next season.
He told Tuttomercatoweb: "I am very happy to be part of the history of the derby. I think next year I'll win something with this team."
Asked to rate the club's season out of 10, he responded: "I would say seven, but we will do so to raise it to 10 next year."
Fortunately he was not asked to rate former club Newcastle's campaign on such a scale...