West Ham boss David Moyes is wary facing Fulham on Sunday.
Both clubs are fighting for Europe this season.
Moyes said: "I think Marco has done a really good job at Fulham, stabilised them a lot, and they don't look like a side who have been threatened by relegation in any way.
"They might be a bit disappointed by their league position.
"But Marco has done a really good job and Fulham have got a lot of good players."