Manchester United's Andre Onana. Photo: Massimo Paolone/LaPresse
Alejandro Garnacho, Bruno Fernandes and Scott McTominay scored for United in a breathless game, but Erik ten Hag's team remained bottom of Group A on four points from five matches.
The three-times European champions' hopes of advancing depend on the late game between Bayern Munich (12 points) and Copenhagen (four points) ahead of their final match against the German group winners on 12 December. A Copenhagen victory would eliminate United.
The visitors roared into an early 2-0 lead through Garnacho, fresh from his spectacular overhead strike at Everton, and a stunning shot by Fernandes before Hakim Ziyech pulled one back from a free kick following an error by Onana.
McTominay put United 3-1 up soon after halftime but their cushion was short-lived as Ziyech slotted home another free kick under the arm of Onana and Muhammed Kerem Akturkoglu equalised for Galatasaray in the 71st minute.
Galatasaray welcomed United to RAMS Park by spelling out "Welcome to Hell" at one end of the stadium and it definitely was for Onana.
The game for United was a virtual repeat of their Champions League group clash with Copenhagen in which they gave away a commanding lead. The end-to-end match saw 17 shots for United and 16 for Galatasaray, many in the dying minutes as both sides pushed for victory.
Fernandes had a chance to become the hero, but his 85th-minute effort struck the post.
-Reuters
