They have been two of the best players in the league this season and on Sunday Chris Smalling and Raheem Sterling will come face to face in the Manchester derby. City are currently top of the Premier League table, but United can overtake them with a win at Old Trafford this weekend. Ahead of the match, Sportsmail's Martin Keown dissects one of the biggest battles of the day... Manchester United have had some illustrious defenders in recent years — Rio Ferdinand, Nemanja Vidic, Jaap Stam, Steve Bruce, Gary Pallister — and Chris Smalling could be next in line. It is easy to underestimate how hard it can be adjusting to a club the size of Manchester United.Chris Smalling and Raheem Sterling come face to face this weekendManchester United can overtake City and go top with a win in the derbySportsmail's Martin Keown dissects the battle between the two playersSmalling could be next in the line of great defenders to grace Old Trafford
When _ went to City, people wondered if his development would stall because he wouldn't get in the team.