Man City boss Mancini impressed by Newcastle January signings
City eased past the Toon 3-1 at St James' Park but Newcastle will be a different proposition this time around after their transfer window activity.
Mancini said: "They have changed three or four players in the January market and have improved their team.
"They are a good team with a good manager and are doing well in the Europa League. Every time you play them it is a difficult game because they have good players."