West Ham hit the training ground on Thursday as they aim to extend their unbeaten run in Friday night's trip to Brighton.
Four defeats in a row signaled a worrying start to Manuel Pellegrini's tenure at the London Stadium.
But they responded by picking up points against Everton, Chelsea and Manchester United and could move into the top half of the table with a win at the Amex.
Manuel Pellegrini will be without midfielder Carlos Sanchez on the south coast, with the Colombian international requiring knee surgery after picking up ligament damage.
Pellegrini has confirmed the 32-year-old will have to go under the knife once the injury has settled down.
'Carlos had a problem with his knee ligament, maybe he will need a couple of weeks to be able to have surgery but he needs that,' said Pellegrini.
With Jack Wilshere still sidelined after an ankle operation Pellegrini is short in the centre with only Declan Rice, Pedro Obiang and skipper Mark Noble currently available.
Rice, Obiang and Noble are poised to form the midfield three once again when West Ham travel to Brighton on Friday night.
The Hammers boss said on Thursday he believes there is still more to come from his side: 'I feel we are improving but I don’t know if we are in our best moment but, when you compare what we did in the last weeks, playing the three games at home, when you compare with the start of the season, of course we are improving.
'But we must be careful in this moment and we need to continue improving because in the Premier League every game is very difficult.
'I am happy with the reaction to our recent performances, but when the results were not good, I never felt any protests from the fans. I think they trusted a lot in what we were doing.'
