Carl Jenkinson has told talkSPORT that Slaven Bilic has made a lot of changes at Upton Park since taking over from Sam Allardyce.
Bilic arrived at West Ham in the summer, and he has quickly made an impact at the London club.
The Hammers have made a fantastic start to the 2015/16 campaign, where they have climbed into the top-four of the Premier League, and Jenkinson admits that a lot of work has been undertaken since the Croatian manager came in.
"With the new manager, everything’s changed in quite a few different ways, with no disrespect to Sam [Allardyce] – he did fantastic for the club," he said.
“Slaven has come in, the training’s very intense and quite a few things have changed. Obviously with the players he’s brought in and I think there’s an awful lot of quality in the squad.
“Obviously there’s been a few changes with personnel, but they’ve been positive ones.
“We’ve got some great results against the big clubs away from home this year. At those sort of grounds you’ve got to sit in and defend well.
"We’ve got such pace on the break, where I think it’s suited us to be honest. In those games we’ve defended really well. [Victor] Moses, [Diafra] Sakho, [Dimitri] Payet, [Manuel] Lanzini - they are very good players on the break and that has suited us down to the ground.”
A sizeable chunk of West Ham's followers never bought into Allardyce's ethos during his time as manager, but Bilic has already won the fan base over.
His charismatic persona, coupled with his attacking tactics, have impressed Hammers supporters so far, and there is great optimism around Upton Park at the moment.
The Hammers have been very dangerous going forward this term, and only Manchester City have been able to score more goals in the Premier League to date.
This threat has led West Ham to victories over the likes of Liverpool, Arsenal and City, and there is talk that a European place for next season could be theirs for the taking if they can maintain their performance levels.