The 20-year-old has come through the City youth ranks and has yet to score in 20 senior appearances.
But Mowbray said: "Ishmael is a young player who has been on the fringes at Man City in a difficult period for their club.
"He would play as a striker if we managed to bring him in and he would offer different assets to what we have already got at our club.
"He is a big, powerful and quick boy.
"He has played a lot of reserve matches and is someone who needs exposure on the football pitch."