4-4-2: This is the unstoppable Man United and Man City combined XI

GK: David De Gea

There really is  no debate here, with all the goalkeeping upheaval at The Eithad the Spaniard is the obvious choice to be the man between the sticks in this stellar XI.

Even if Guardiola kept with Joe Hart as his No. 1, De Gea would retain his spot in this side. The 25-year-old is one of the best in the business and has come one leaps and bounds since he arrived in Manchester.