He told the Evening Herald: "I think it's fair to say that me moving to Celtic has not gone according to plan.
"At the time, it was the chance of a lifetime and the chance to join a club like Celtic, where you could win things and play in the Champions League. It was not something I could turn down, but it hasn't turned out the way I wanted it.
"I'm not involved, I'm not featuring and at this stage of my career I need to be playing regularly."
Flood, who has 18 months left on his contract at Celtic, added: "They will decide what I do, but it's best that I go out on loan, at least, and see what happens then.
"I've spoken to Tony Mowbray about it and he's been great with me. He's one of the most honest people I've met in football, he hasn't messed me around in any way.
"He says it would be best for me to go out on loan next month, get some games in and get my sharpness back and we'll assess things again in the summer."