The Belgium international has again been in sparkling form this season leading to him being linked with a move away in the summer, with Chelsea leading the chase for his services.
But Moyes believes that Fellaini will still be at the club next term despite reports he has a £23million release clause in his present deal.
He told the Express: “Marouane was only part of a team that won against Manchester United, he scored the goal but we have to remember what the other players did.
“He is a big part of our squad not only because of his size but also because of how important he is to us and he is someone that we will be more than happy to see here again next year at Goodison.”
St Mirren boss Jack Ross has told his Buddies he wants to see a sprint finish as they look to romp towards the Ladbrokes Championship flag.