"I didn't set any conditions to rejoin Ismaili. I'm just happy to be back in Ismailia," Abou-Greisha told FilGoal.com on Thursday.
"My negotiations with Ismaili board were concluded quickly because I was so keen to return home. I penned a three-and-a-half year contract."
The 27-year-old striker joined Lucheng last January on a one-year deal in search of regular first-team football.
However, he was left with no choice but to return home after failing to adapt to the Chinese style of football.
Abou-Greisha's arrival will be a boost for Ismaili coach Ricardo Ferreira, who has limited attacking options at his disposal.
Ismaili currently have one reliable striker in the shape of Iraqi Mostafa Karim, who scored five league goals so far this season.
Karim's Partner, Mohamed Fadl, is yet to really impress this term, scoring just twice nine matches.
In-form midfielder Abdullah Saied is Ismaili's top scorer with six goals.