Southampton boss Claude Puel says they can't focus totally on Dimitri Payet's threat for West Ham.
France international Payet scored a 25-yard free-kick in injury time to see off the challenge of Accrington Stanley in the EFL Cup on Wednesday night.
Puel said: "It (a free-kick from Payet) would be a good opportunity for them, and of course defending is important, but we must also concentrate on all the many good things we do on the pitch,' the Southampton manager said at a press conference.
"He (Payet) is a very good player on the free-kicks, but our players also have many qualities and it will be difficult for West Ham to defend these players.
"It is important to keep in our minds all of the good things we can make on the pitch and not just to stay in close (attention) with the opponent, (but) to give a good answer against all of the (West Ham) team, with a good concentration."