West Ham United winger Pablo Barrera can sense growing improvement within the squad.
They remain bottom despite Saturday's morale-lifting home win over Wigan.
Barrera, though, feels Avram Grant's side are improving.
"During the week, we had discussed what we had to do to be better to turn the corner," he said.
"Mainly we have talked about concentrating more during the 90 minutes because those lapses in concentration had cost us some wins and we ended up drawing them instead.
"In general the team has been playing well, but we just needed that focus until the last second of the game.
"Of course, we will need to do this against United as they are a strong team."
