Manchester United’s Paul Pogba, left, reacts after the English Premier League match. (AP Photo)

Manchester United boss Ole Gunnar Solskjaer has won four of his eight meetings with Guardiola in all competitions, with the Spaniard saying that the addition of Portugal forward Cristiano Ronaldo had made the opposition stronger. City travel to Old Trafford in the Premier League on Saturday, with Guardiola’s side three points ahead of their rivals after 10 games.