Saha believes the Belgium international would be a perfect signing for United.
Lukaku has scored 18 goals in 28 Premier Leage apperances for Everton this season.
“I have to admit that I rated Lukaku highly when he was at Chelsea, when he was young. I could see he was not ready, but now he has performed really well at Everton,” Saha told IBTimes UK.
“And definitely he will bring something to the United side because he is strong, he has got that presence to trouble the central defenders.
“With someone like Lukaku on United’s side, especially his presence around the box, along with [Anthony] Martial playing on the left and [Wayne] Rooney also linking with Lukaku, it will be great.
“It would be nice to have him at United. In terms of strikers, in terms of options, in terms of diversity and attacking options, Lukaku will be a right fit for United.”