Giggs on bench for last United home game
Manchester United's Welsh caretaker manager Ryan Giggs leaves the field at the end of the English Premier League football match between Manchester United and Sunderland at Old Trafford in Manchester, northwest England on May 3, 2014 - by Andrew Yates
Giggs, 40, will step down as interim manager after Sunday's final Premier League game at Southampton and his contract as a player is also due to expire.
Writing in the match-day programme, Giggs said: "There have been times this season when I have felt that it wouldn't be right for me to play on next year, but then after other games -- like the win over Olympiakos -- I have had the urge to keep going.
"I have honestly not made my mind up either way, and there are a lot of things to consider -- not least, of course discussing the matter with the new manager here at Old Trafford."
Giggs, who made his United debut in March 1991, is United's all-time record appearance-maker and most decorated player.
He was put in charge of first-team affairs after David Moyes was sacked last month and United are yet to appoint a full-time manager.
Giggs was joined on the bench by United captain Nemanja Vidic, who is due to join Inter Milan on a free transfer in the close season after eight years of service at Old Trafford.
Giggs sprang a major surprise with his team selection, meanwhile, by naming unheralded young forwards Tom Lawrence, 20, and James Wilson, 18, in his starting XI.