"They've settled in really well," Hughes told fulhamfc.com. "We've played against them before so we knew what they were like. They're good lads and the atmosphere and group we've got here makes it easy for them to settle in.
"Mladen, he's played against Fulham so we knew what he was like. He's looked like what we expected in the friendly games he's played so far.
"Sascha's done well too. He's looked solid and we're still waiting on Hugo. We know what their qualities are and that can only be a positive for us."