5. Matija Nastasic (£15m from Fiorentina)
Since joining City on a five year deal in 2012, 20 year old Nastasic has made a huge impact, overtaking Joleon Lescott as first choice in the centre-back defensive position. Nastasic has become a fan favourite, winning the Manchester City Young Player Of The Year Award for the 2012/2013 season.