Answer
Nzonzi's transfer fee to Blackburn Rovers was £650,000. This fee was paid to his previous club, Amiens, in order to secure his services. Nzonzi made a significant contribution to Blackburn Rovers during his time there, helping them to achieve promotion to the Premier League in 2012. He was a key player in the team and was known for his physical presence and ability to win the ball back in midfield.