West Ham co-owner David Gold has assured fans after poor preseason results.
Gold wrote for whufc.com: "Results might not have gone our way in Austria this week but I can assure everyone that Slaven will be more focused on getting the players ready for the first major game in the Europa League.
"Pre-season is more about the players building up a good team spirit and the new signings getting to know the rest of the squad which is exactly what they have been doing in America and Austria.
"Work is taking place all the time to make sure our new home is ready for the Europa League game and we will soon be installing our new sign at the top of the Stadium.
"It will be another momentous moment and really puts our stamp on the new Stadium. We always promised our fans it will feel like West Ham's home."