Gardner is currently on a loan move to Forest from Aston Villa which is scheduled to last until the end of the season.
However, the central midfielder has not ruled out the chance of the switch being converted into a permanent one, should the two clubs agree a fee further down the line.
“Football is a strange game. If I didn’t want to be here, I wouldn’t have come back here,” Gardner said.
“If something happened and Forest and Villa spoke about that [a permanent transfer] then who knows.”
Gardner was on loan at Forest towards the back end of last season, and he has made no secret of his affection towards the club.
The 23-year-old has constantly posted messages of support for Forest on social media, and he also rejected other teams to sign for them this time around.
Gardner has made three appearances for Forest since returning to the club, and he looks to have established his place in Dougie Freedman’s starting line up already.
The Reds have not lost a match since Gardner has returned to them, and their next match comes against top of the table Middlesbrough at the weekend.