Galloway joined the Black Cats on a season-long loan in the summer but has struggled for regular action at the Stadium of Light.
The 21-year-old has made just seven league appearances this season but hasn’t started a game since September.
Since Coleman took charge in November things have got even worse for Galloway, with the youngster making just two substitute appearances totalling 42 minutes.
When asked about Galloway’s future, Coleman confirmed he was considering cutting his loan spell short for the good of the player’s career.
“Brendan is at an age where boys of his age who have come out on loan need to be playing, his development is important as well.
“These guys are not participating, it is hard for them too as they need to be playing.
“We are looking at what we absolutely need here to help us out.
“There will be a conversation and it is an ongoing conversation but nothing has been decided on any of that yet.”
This is the second loan move that hasn’t worked out for Galloway after a miserable time at West Brom last campaign.
The former MK Dons youngster made just five appearances in all competitions before being allowed to return to Everton early in order to play for the U23s.
With first-team action at Goodison Park also unlikely, Galloway may have to consider dropping further down the league ladder in order to resurrect his career.