Carrick is, though, expected to remain at United as part of Jose Mourinho's coaching staff next season.
The former England global made the announcement at United's press conference on Monday ahead of the Champions League last-16, second-leg match against Sevilla.
The Old Trafford club captain told a news conference on Monday: "There comes a time, wether". The veteran midfielder has played 463 times for United since joining from Tottenham in 2006.More news: Ford Mustang California Special Gets Updates Inside and Out
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"It's fine, it's something you've got to accept so that is where I'm at".
"It's kind of being sorted out, we're still talking about it to be honest". Despite these global appearances, the midfielder has only made one appearance at a major tournament for England, often being overlooked in favour of the likes of Paul Scholes and Steven Gerrard.
Last season's Europa League triumph completed Carrick's sweep of domestic and European club trophies. "I've been training hard and we'll see what happens for the rest of the season", said Carrick.
The 36-year-old took the call on his 19-year long career after undergoing a medical procedure to correct an irregular heart rhythm late last year after suffering from dizzy spells. There were two or three times when I wondered whether it was worth still playing, but I soon got over that. "I wanted to finish on my own terms". "I am trying to help a lot more because I understand where I am at".