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.