West Ham manager Sam Allardyce is not bothered by how Manchester City will react to their slump, only that his own players produce the goods at the Etihad Stadium on Sunday. A terrible run of form has seen City slip down into fourth place, their 4-2 loss to rivals Manchester United leaving Manuel Pellegrini's side well adrift of leaders Chelsea and now in a battle to stay ahead of Liverpool in the race for Champions League qualification. However, West Ham are also in need of some consistency, with a stoppage-time goal conceded at home to Stoke denying them what would have been only a third league win of 2015. West Ham manager Sam Allardyce will hope for a strong end to the season, but it has threatened to tail off . Allardyce  reacts on the touchline during the Hammers' match with Stoke City at Upton Park last weekend . 'I am more concerned about getting the best out of my team,' said Allardyce, whose side are now in 10th place, having once looked set for a European qualification challenge themselves. 'Maybe City are a wounded animal and they might come out all guns blazing or they might be tentative. We won't know until the match starts. 'We are expecting them to put in a determined performance in front of their own fans.' Allardyce added: 'The motivation for our players should be that they have let themselves down by not achieving the results that they should have done from the positions we have been in. 'We want to get the feel-good factor back by winning a few games and getting the confidence back up.' Allardyce believes the Irons can yet go on to secure their best finish since winning promotion back to the top flight. 'At the moment we want to reach the 50-point mark or higher, that will make sure we finish higher than we have done in the three years we have been back,' he said. Enner Valencia (left) is expected to return at the Etihad Stadium, but a thigh strain has ruled out Diafra Sakho . West Ham will be without Senegal forward Diafra Sakho because of a thigh strain, but Enner Valencia has recovered from a foot problem and so will lead the front line alongside veteran striker Carlton Cole. Allardyce said: 'Those two guys have to perform to the very best and find the goals we need to try to win the game. 'Playing at our top level is our aim on Sunday. Whether that gets us the result or not we will have to wait and see based on the quality of the opposition we are against, because when you play Manchester City all of your players have to be on top form in all areas. 'If our lads have their shooting boots on, which we need, then you never know.'
West Ham manager Sam Allardyce wants more consistency from his side . Allardyce expects Manchester City to put in a 'determined' performance . The Hammers are 10th having won just one of their last 10 league matches . City have lost one more league game in 2015 than in the whole of last year . West Ham will be without Diafra Sakho but Enner Valencia is due to return .