The Bulgarian has enjoyed an impressive opening to his career with the Cottagers, having scored twice in two Premier League starts.
And the Australia international singled out the forward, who joined from Manchester United on deadline day, as the club's star signing.
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He told the club's official website: “Dimitar Berbatov is an excellent player, everyone knows what a great player he is and he’s been excellent for us since the day he arrived.
"He’s a top pro who is happy to help out the young boys and I think he’s a massive plus for us and we’ve seen that in the games he’s played.
“When you’ve got new players added to the squad, it’s always important to have that core of a team that have the experience and know what it’s like to play for Fulham Football Club.
“I think the players that have come into the club have done extremely well."
The veteran goalkeeper was also keen to deflect attention from his own solid performance during Saturday's 2-1 win at Wigan, praising his team-mates' contributions.
“It was a really good away performance from us,” continued Schwarzer.
“We started the game very well and were a little bit disappointed that we weren’t a couple more goals up at half-time. We started a bit sluggish in the second half but we worked really hard and then scored the second goal.
"You just do your job. You know going away from home that you’re going to be under pressure and I just get on with it and play my game and as a team we got the result which is the main thing.”