Michael Carrick says his performance in his final game at Old Trafford proves it's the right time for him to retire.
Carrick, who set up the only goal of the game in a 1-0 Manchester United win over Watford, will join Jose Mourinho's backroom team from next season after an excellent career for the Reds.
It was Carrick’s 464th United appearance on Sunday and he was withdrawn to a standing ovation from the home fans five minutes to the end of the tie.
Speaking on the pitch after the game, Carrick said: "I would like to say thank you for your support over the years, I've got a lot of memories to cherish. It's the greatest club in the world and I thank you for your support for the last 12 years.
"I want to say a massive thank you to my family and friends. I'm grateful for everything you've done for me, thank you.
"It wasn't the best [performance] from me [today] but it tells me the time is right. I want to thank the manager for the opportunity, it's unbelievable for me. I look forward to learning and working closely with him.
"I'm sure he will teach me some things and we'll have some success in the near future I'm sure."
Carrick also paid tribute to his former manager Sir Alex Ferguson, who is in recovery after suffering a brain haemorrhage last week.
"Lastly it's been a tough week for everyone at the club. Part of this family is Sir Alex and he's had a tough week this week, I would just like to say I'm sure he appreciates all the support you have given him.
"All our thoughts and prayers are with him and we wish him a speedy recovery.
"We want to see him sitting back up there [the directors' box] some time soon."