Rodri has sent a message to Manchester City fans after joining Spanish champions Barcelona for £65million.The 30-year-old won 12 major honours during his tenure at the Etihad Stadium, making 298 appearances after joining them from Atletico Madrid for a then-club record £62.8m.Taking time to reflect on his career with City, the Spaniard said his "heart will always be blue".He told his former club's media: "I am leaving the club with a huge sense …