Giggs celebrated his 40th birthday on Friday.
Asked if Giggs could go on playing next season, the Scot said: "I think, when you get to Ryan's age, it's best to make decisions at the end of the season.
"It's how you feel, how you've done over the year and what your body is telling you. So there's no quick decisions on that one. He's on the staff now, so we can always use him at any time!"
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball