Pep Guardiola was happy that his side picked up another late Premier League win against West Ham but confessed he’s concerned about facing a tall team in Manchester United next weekend. The Spaniard has guided Manchester City to 13 straight wins in England’s top flight and David Silva’s late winner ensured they head to Old Trafford next Sunday some eight points clear at the top of the division. However, Guardiola was concerned by the manner of West Ham’s goal, with Angelo Ogbonna thumping home a header. And he admitted that United’s significant height advantage will pose his relatively diminutive team real problems next week. ‘We started really well but we lost our patience,’ he told the BBC. ‘We didn’t have any rhythm because Adrian was taking 30 seconds every time. ‘It was similar to the last few games, in the second half I thought we would score. It was massive. They played 10 players inside the box, it was almost impossible. It’s a big victory. It showed what we are.