The left-footed player has admitted that a lack of regular appearances - albeit owing to injury - could turn his head towards seriously considering hanging up his boots.
Giggs recently turned 37 at the end of last month, and has made only five starts in the Premier League this term.
"For me, where I'm at right now is the thought that I've had a stop-start season, so I just want to get back playing," he told The Daily Telegraph.
"I'm not going to play every week, but I want a consistent run over a couple of months to see where I'm at.
"But it gets closer every year, the thinking that, 'This could be my last season'.
"I'm closer this season than I was last season, but that's probably because I haven't been playing regularly.
"If I have a run in the team and play well, then I will probably want to carry on. If I don't, then I'll have to assess it.
"But I think I have a relationship with the manager where, if I really wasn't enjoying my football or I didn't think I was being effective, I could just sit down with him and we would both be honest to each other and say, 'Right, that's it'."
However, Giggs has conceded that he may struggle to come to terms with retirement, as he has been playing professionally for almost two decades.
"I've been doing this for 20 years, so it will be strange and weird when it stops," he said.
"It's a scary thought, but not one that I am too worried about, although I've no doubt that I will be bored.
"I'll have to find something to do because I get bored when I have a couple of days off. What I'll do, I just don't know.
"You speak to players who have finished playing and they just say that you have to play as long as you can and enjoy it. That's what I'm doing at the moment."
